Started beatles vs stones comparison

[battle-of-the-bands.git] / beatles-vs-stones.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Sad songs<a name=\"top\"></a>\n",
    "\n",
    "This is a replication of the [fitteR happieR](http://rcharlie.com/2017-02-16-fitteR-happieR/) post which attempted to find the most depressing Radiohead song.\n",
    "\n",
    "I've redone it here, using tools available in TM351.\n",
    "\n",
    "I'm also on a bit of a Beatles jag, so I've also done the analysis for Beatles songs.\n",
    "\n",
    "http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0115255#s5\n",
    "https://www.discogs.com/developers/#page:database,header:database-artist-releases\n",
    "http://data.discogs.com/\n",
    "\n",
    "\n",
    "## Contents\n",
    "### Data gathering\n",
    "\n",
    "* [Getting data from Spotify](#getspotify)\n",
    "* [Tag album with artist](#tagalbumwithartist)\n",
    "* [Tag track with artist](#tagtrackwithartist)\n",
    "* [Get full track data](#fulltrackdata)\n",
    "* [Lyrics search](#lyricssearch)\n",
    "\n",
    "^^ Done\n",
    "\n",
    "vv Not done\n",
    "\n",
    "* [Matching datasets](#matchingdatasets)\n",
    "* [Copy the lyrics over](#copylyrics)\n",
    "* [Sentiment analysis](#sentimentanalysis)\n",
    "\n",
    "### Data analysis\n",
    "* [Analysis](#analysis)\n",
    "* [Sentiment](#sentiment)\n",
    "* [Gloom index](#gloomindex)\n",
    "* [Revised gloom index](#revisedgloomindex)\n",
    "* [Contrasting songs](#valencenegcontrast)\n",
    "* [Gloom per album](#gloomperalbum)\n",
    "* [Complexity per album](#complexityovertime)\n",
    "\n",
    "### [Conclusion](#conclusion)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": true,
    "run_control": {
     "read_only": false
    }
   },
   "outputs": [],
   "source": [
    "import pandas as pd\n",
    "import numpy as np\n",
    "import matplotlib\n",
    "import matplotlib.pyplot as plt\n",
    "%matplotlib inline  \n",
    "import urllib.request\n",
    "import urllib.parse\n",
    "import urllib.error\n",
    "import json\n",
    "import base64\n",
    "import configparser\n",
    "from bs4 import BeautifulSoup\n",
    "import re\n",
    "import pymongo\n",
    "from datetime import datetime\n",
    "import time\n",
    "import collections"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We'll use MongoDB to store the data, to save keeping it all in memory, and mean we don't have to recapture all the data to to a different analysis."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "# Open a connection to the Mongo server\n",
    "client = pymongo.MongoClient('mongodb://localhost:27017/')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "try:\n",
    "    client.drop_database(songs_db)\n",
    "except NameError:\n",
    "    print(\"DB doesn't exist yet.\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "# Create a database and a collections within it.\n",
    "songs_db = client.songs\n",
    "albums = songs_db.albums\n",
    "tracks = songs_db.tracks\n",
    "genius_tracks = songs_db.gtracks"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "API keys and the like are kept in a configuration file, which is read here.\n",
    "\n",
    "You'll need to create a web API key for Spotify and Genius. "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['app_name', 'client_id', 'client_secret', 'redirect_uri', 'token']"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "config = configparser.ConfigParser()\n",
    "config.read('secrets.ini')\n",
    "[k for k in config['genius']]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "## How to write the config file. Fill in the details, and create a different config section for Spotify.\n",
    "# config['genius'] = {}\n",
    "# config['genius']['app_name'] = 'xxx'\n",
    "# config['genius']['client_id'] = 'xxx'\n",
    "# config['genius']['client_secret'] = 'xxx'\n",
    "# config['genius']['token'] = 'xxx'\n",
    "# with open('secrets.ini', 'w') as configfile:\n",
    "#     config.write(configfile)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Get album and track data from Spotify<a name='getspotify'></a>\n",
    "We'll download the data on artists, albums, and tracks from Spotify.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "def get_artists(artist_name):\n",
    "    query = urllib.parse.urlencode({'q': artist_name, 'type': 'artist'})\n",
    "    request = 'https://api.spotify.com/v1/search?{}'.format(query)\n",
    "    with urllib.request.urlopen(request) as f:\n",
    "        response = json.loads(f.read().decode('utf-8'))\n",
    "        artists = []\n",
    "        for artist in response['artists']['items']:\n",
    "            if artist['name'].lower() == artist_name.lower():\n",
    "                this_artist = {'name': artist['name'], 'id': artist['id']}\n",
    "                if artist['images']:\n",
    "                    this_artist['image'] = artist['images'][0]['url']\n",
    "                artists += [this_artist]\n",
    "    return artists"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "('22bE4uQ6baNwSHPVcDxLCe',\n",
       " [{'id': '22bE4uQ6baNwSHPVcDxLCe',\n",
       "   'image': 'https://i.scdn.co/image/999fa985ec8beb68af356b1fc1bc3cd5ba3e0a68',\n",
       "   'name': 'The Rolling Stones'}])"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "artists = get_artists('the rolling stones')\n",
    "stones_id = artists[0]['id']\n",
    "stones_id, artists"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "('3WrFJ7ztbogyGnTHbHJFl2',\n",
       " [{'id': '3WrFJ7ztbogyGnTHbHJFl2',\n",
       "   'image': 'https://i.scdn.co/image/934c57df9fbdbbaa5e93b55994a4cb9571fd2085',\n",
       "   'name': 'The Beatles'}])"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "artists = get_artists('the beatles')\n",
    "beatles_id = artists[0]['id']\n",
    "beatles_id, artists"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Find all the albums for an artist."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "def get_albums(artist_id):\n",
    "        request = 'https://api.spotify.com/v1/artists/{id}/albums?market=GB&album_type=album'.format(id=artist_id)\n",
    "        with urllib.request.urlopen(request) as f:\n",
    "            response = json.loads(f.read().decode('utf-8'))\n",
    "            for a in response['items']:\n",
    "                album_request = a['href']\n",
    "                with urllib.request.urlopen(album_request) as af:\n",
    "                    album = json.loads(af.read().decode('utf-8'))\n",
    "                    album['_id'] = album['id']\n",
    "                    albums.replace_one({'_id': album['_id']}, album, upsert=True)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 41,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "15"
      ]
     },
     "execution_count": 41,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "get_albums(beatles_id)\n",
    "albums.find().count()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "48"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "get_albums(stones_id)\n",
    "albums.find().count()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
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       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>0</th>\n",
       "      <th>1</th>\n",
       "      <th>2</th>\n",
       "      <th>3</th>\n",
       "      <th>4</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>_id</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>2pCqZLeavM2BMovJXsJEIV</td>\n",
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       "    </tr>\n",
       "    <tr>\n",
       "      <th>album_type</th>\n",
       "      <td>album</td>\n",
       "      <td>album</td>\n",
       "      <td>album</td>\n",
       "      <td>album</td>\n",
       "      <td>album</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>artists</th>\n",
       "      <td>[{'href': 'https://api.spotify.com/v1/artists/...</td>\n",
       "      <td>[{'href': 'https://api.spotify.com/v1/artists/...</td>\n",
       "      <td>[{'href': 'https://api.spotify.com/v1/artists/...</td>\n",
       "      <td>[{'href': 'https://api.spotify.com/v1/artists/...</td>\n",
       "      <td>[{'href': 'https://api.spotify.com/v1/artists/...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>available_markets</th>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>copyrights</th>\n",
       "      <td>[{'text': '(C) 2016 Apple Corps Ltd.', 'type':...</td>\n",
       "      <td>[{'text': '(C) 2015 Apple Corps Ltd.', 'type':...</td>\n",
       "      <td>[{'text': '(C) 2015 Apple Corps Ltd', 'type': ...</td>\n",
       "      <td>[{'text': '(C) 2015 Apple Corps Ltd', 'type': ...</td>\n",
       "      <td>[{'text': '(C) 2015 Apple Corps Ltd', 'type': ...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>external_ids</th>\n",
       "      <td>{'upc': '00602557054989'}</td>\n",
       "      <td>{'upc': '00602547673503'}</td>\n",
       "      <td>{'upc': '00602547670069'}</td>\n",
       "      <td>{'upc': '00602547670342'}</td>\n",
       "      <td>{'upc': '00602547670328'}</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>external_urls</th>\n",
       "      <td>{'spotify': 'https://open.spotify.com/album/5X...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/album/5j...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/album/2p...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/album/2P...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/album/47...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>genres</th>\n",
       "      <td>[]</td>\n",
       "      <td>[]</td>\n",
       "      <td>[]</td>\n",
       "      <td>[]</td>\n",
       "      <td>[]</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>href</th>\n",
       "      <td>https://api.spotify.com/v1/albums/5XfJmldgWzrc...</td>\n",
       "      <td>https://api.spotify.com/v1/albums/5ju5Ouzan3Qw...</td>\n",
       "      <td>https://api.spotify.com/v1/albums/2pCqZLeavM2B...</td>\n",
       "      <td>https://api.spotify.com/v1/albums/2Pqkn9Dq2DFt...</td>\n",
       "      <td>https://api.spotify.com/v1/albums/47bcKzmKgmMP...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>id</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>2pCqZLeavM2BMovJXsJEIV</td>\n",
       "      <td>2Pqkn9Dq2DFtdfkKAeqgMd</td>\n",
       "      <td>47bcKzmKgmMPHXNVOWpLiu</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>images</th>\n",
       "      <td>[{'height': 640, 'url': 'https://i.scdn.co/ima...</td>\n",
       "      <td>[{'height': 640, 'url': 'https://i.scdn.co/ima...</td>\n",
       "      <td>[{'height': 640, 'url': 'https://i.scdn.co/ima...</td>\n",
       "      <td>[{'height': 640, 'url': 'https://i.scdn.co/ima...</td>\n",
       "      <td>[{'height': 640, 'url': 'https://i.scdn.co/ima...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>label</th>\n",
       "      <td>Digital Distribution Trinidad and Tobago</td>\n",
       "      <td>Digital Distribution Trinidad and Tobago</td>\n",
       "      <td>EMI Catalogue</td>\n",
       "      <td>EMI Catalogue</td>\n",
       "      <td>EMI Catalogue</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>name</th>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>Let It Be (Remastered)</td>\n",
       "      <td>Abbey Road (Remastered)</td>\n",
       "      <td>Yellow Submarine (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>popularity</th>\n",
       "      <td>63</td>\n",
       "      <td>77</td>\n",
       "      <td>68</td>\n",
       "      <td>75</td>\n",
       "      <td>58</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>release_date</th>\n",
       "      <td>2016-09-09</td>\n",
       "      <td>2000-11-13</td>\n",
       "      <td>1970-05-08</td>\n",
       "      <td>1969-09-26</td>\n",
       "      <td>1969-01-17</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>release_date_precision</th>\n",
       "      <td>day</td>\n",
       "      <td>day</td>\n",
       "      <td>day</td>\n",
       "      <td>day</td>\n",
       "      <td>day</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>tracks</th>\n",
       "      <td>{'limit': 50, 'previous': None, 'next': None, ...</td>\n",
       "      <td>{'limit': 50, 'previous': None, 'next': None, ...</td>\n",
       "      <td>{'limit': 50, 'previous': None, 'next': None, ...</td>\n",
       "      <td>{'limit': 50, 'previous': None, 'next': None, ...</td>\n",
       "      <td>{'limit': 50, 'previous': None, 'next': None, ...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>type</th>\n",
       "      <td>album</td>\n",
       "      <td>album</td>\n",
       "      <td>album</td>\n",
       "      <td>album</td>\n",
       "      <td>album</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>uri</th>\n",
       "      <td>spotify:album:5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>spotify:album:5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>spotify:album:2pCqZLeavM2BMovJXsJEIV</td>\n",
       "      <td>spotify:album:2Pqkn9Dq2DFtdfkKAeqgMd</td>\n",
       "      <td>spotify:album:47bcKzmKgmMPHXNVOWpLiu</td>\n",
       "    </tr>\n",
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      "text/plain": [
       "                                                                        0  \\\n",
       "_id                                                5XfJmldgWzrc1AIdbBaVZn   \n",
       "album_type                                                          album   \n",
       "artists                 [{'href': 'https://api.spotify.com/v1/artists/...   \n",
       "available_markets       [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "copyrights              [{'text': '(C) 2016 Apple Corps Ltd.', 'type':...   \n",
       "external_ids                                    {'upc': '00602557054989'}   \n",
       "external_urls           {'spotify': 'https://open.spotify.com/album/5X...   \n",
       "genres                                                                 []   \n",
       "href                    https://api.spotify.com/v1/albums/5XfJmldgWzrc...   \n",
       "id                                                 5XfJmldgWzrc1AIdbBaVZn   \n",
       "images                  [{'height': 640, 'url': 'https://i.scdn.co/ima...   \n",
       "label                            Digital Distribution Trinidad and Tobago   \n",
       "name                                           Live At The Hollywood Bowl   \n",
       "popularity                                                             63   \n",
       "release_date                                                   2016-09-09   \n",
       "release_date_precision                                                day   \n",
       "tracks                  {'limit': 50, 'previous': None, 'next': None, ...   \n",
       "type                                                                album   \n",
       "uri                                  spotify:album:5XfJmldgWzrc1AIdbBaVZn   \n",
       "\n",
       "                                                                        1  \\\n",
       "_id                                                5ju5Ouzan3QwXqQt1Tihbh   \n",
       "album_type                                                          album   \n",
       "artists                 [{'href': 'https://api.spotify.com/v1/artists/...   \n",
       "available_markets       [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "copyrights              [{'text': '(C) 2015 Apple Corps Ltd.', 'type':...   \n",
       "external_ids                                    {'upc': '00602547673503'}   \n",
       "external_urls           {'spotify': 'https://open.spotify.com/album/5j...   \n",
       "genres                                                                 []   \n",
       "href                    https://api.spotify.com/v1/albums/5ju5Ouzan3Qw...   \n",
       "id                                                 5ju5Ouzan3QwXqQt1Tihbh   \n",
       "images                  [{'height': 640, 'url': 'https://i.scdn.co/ima...   \n",
       "label                            Digital Distribution Trinidad and Tobago   \n",
       "name                                                       1 (Remastered)   \n",
       "popularity                                                             77   \n",
       "release_date                                                   2000-11-13   \n",
       "release_date_precision                                                day   \n",
       "tracks                  {'limit': 50, 'previous': None, 'next': None, ...   \n",
       "type                                                                album   \n",
       "uri                                  spotify:album:5ju5Ouzan3QwXqQt1Tihbh   \n",
       "\n",
       "                                                                        2  \\\n",
       "_id                                                2pCqZLeavM2BMovJXsJEIV   \n",
       "album_type                                                          album   \n",
       "artists                 [{'href': 'https://api.spotify.com/v1/artists/...   \n",
       "available_markets       [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "copyrights              [{'text': '(C) 2015 Apple Corps Ltd', 'type': ...   \n",
       "external_ids                                    {'upc': '00602547670069'}   \n",
       "external_urls           {'spotify': 'https://open.spotify.com/album/2p...   \n",
       "genres                                                                 []   \n",
       "href                    https://api.spotify.com/v1/albums/2pCqZLeavM2B...   \n",
       "id                                                 2pCqZLeavM2BMovJXsJEIV   \n",
       "images                  [{'height': 640, 'url': 'https://i.scdn.co/ima...   \n",
       "label                                                       EMI Catalogue   \n",
       "name                                               Let It Be (Remastered)   \n",
       "popularity                                                             68   \n",
       "release_date                                                   1970-05-08   \n",
       "release_date_precision                                                day   \n",
       "tracks                  {'limit': 50, 'previous': None, 'next': None, ...   \n",
       "type                                                                album   \n",
       "uri                                  spotify:album:2pCqZLeavM2BMovJXsJEIV   \n",
       "\n",
       "                                                                        3  \\\n",
       "_id                                                2Pqkn9Dq2DFtdfkKAeqgMd   \n",
       "album_type                                                          album   \n",
       "artists                 [{'href': 'https://api.spotify.com/v1/artists/...   \n",
       "available_markets       [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "copyrights              [{'text': '(C) 2015 Apple Corps Ltd', 'type': ...   \n",
       "external_ids                                    {'upc': '00602547670342'}   \n",
       "external_urls           {'spotify': 'https://open.spotify.com/album/2P...   \n",
       "genres                                                                 []   \n",
       "href                    https://api.spotify.com/v1/albums/2Pqkn9Dq2DFt...   \n",
       "id                                                 2Pqkn9Dq2DFtdfkKAeqgMd   \n",
       "images                  [{'height': 640, 'url': 'https://i.scdn.co/ima...   \n",
       "label                                                       EMI Catalogue   \n",
       "name                                              Abbey Road (Remastered)   \n",
       "popularity                                                             75   \n",
       "release_date                                                   1969-09-26   \n",
       "release_date_precision                                                day   \n",
       "tracks                  {'limit': 50, 'previous': None, 'next': None, ...   \n",
       "type                                                                album   \n",
       "uri                                  spotify:album:2Pqkn9Dq2DFtdfkKAeqgMd   \n",
       "\n",
       "                                                                        4  \n",
       "_id                                                47bcKzmKgmMPHXNVOWpLiu  \n",
       "album_type                                                          album  \n",
       "artists                 [{'href': 'https://api.spotify.com/v1/artists/...  \n",
       "available_markets       [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...  \n",
       "copyrights              [{'text': '(C) 2015 Apple Corps Ltd', 'type': ...  \n",
       "external_ids                                    {'upc': '00602547670328'}  \n",
       "external_urls           {'spotify': 'https://open.spotify.com/album/47...  \n",
       "genres                                                                 []  \n",
       "href                    https://api.spotify.com/v1/albums/47bcKzmKgmMP...  \n",
       "id                                                 47bcKzmKgmMPHXNVOWpLiu  \n",
       "images                  [{'height': 640, 'url': 'https://i.scdn.co/ima...  \n",
       "label                                                       EMI Catalogue  \n",
       "name                                        Yellow Submarine (Remastered)  \n",
       "popularity                                                             58  \n",
       "release_date                                                   1969-01-17  \n",
       "release_date_precision                                                day  \n",
       "tracks                  {'limit': 50, 'previous': None, 'next': None, ...  \n",
       "type                                                                album  \n",
       "uri                                  spotify:album:47bcKzmKgmMPHXNVOWpLiu  "
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pd.DataFrame(list(albums.find())).head().T"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Tag albums with artists<a name=\"tagalbumwithartist\"></a>\n",
    "As we have tracks for two artists, let's keep the identification easy and insert the artist name and id into each track document.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "for a in albums.find({}, ['artists']):\n",
    "    albums.update_one({'_id': a['_id']}, \n",
    "                      {'$set': {'artist_name': a['artists'][0]['name'],\n",
    "                                'artist_id': a['artists'][0]['id']}})"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>name</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>2pCqZLeavM2BMovJXsJEIV</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Let It Be (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>2Pqkn9Dq2DFtdfkKAeqgMd</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Abbey Road (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>47bcKzmKgmMPHXNVOWpLiu</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Yellow Submarine (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>03Qh833fEdVT30Pfs93ea6</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6</th>\n",
       "      <td>6P9yO0ukhOx3dvmhGKeYoC</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Magical Mystery Tour (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>1PULmKbHeOqlkIwcDMNwD4</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Sgt. Pepper's Lonely Hearts Club Band (Remaste...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>8</th>\n",
       "      <td>0PYyrqs9NXtxPhf0CZkq2L</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Revolver (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>3OdI6e43crvyAHhaqpxSyz</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Rubber Soul (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>10</th>\n",
       "      <td>19K3IHYeVkUTjcBHGfbCOi</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Help! (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11</th>\n",
       "      <td>7BgGBZndAvDlKOcwe5rscZ</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Beatles For Sale (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12</th>\n",
       "      <td>71Mwd9tntFQYUk4k2DwA0D</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>A Hard Day's Night (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13</th>\n",
       "      <td>1DBkJIEoeHrTX4WCBQGcCi</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>The King Of Limbs</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>14</th>\n",
       "      <td>3nkEsxmIX0zRNXGAexaHAn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>With The Beatles (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>15</th>\n",
       "      <td>7gDXyW16byCQOgK965BRzn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Please Please Me (Remastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>16</th>\n",
       "      <td>6vuykQgDLUCiZ7YggIpLM9</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>A Moon Shaped Pool</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>17</th>\n",
       "      <td>47xaqCsJcYFWqD1gwujl1T</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>TKOL RMX 1234567</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>18</th>\n",
       "      <td>7eyQXxuf2nGj9d2367Gi5f</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>In Rainbows</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>19</th>\n",
       "      <td>36lJLPoPPOKNFddTAcirnc</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>In Rainbows Disk 2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>20</th>\n",
       "      <td>6Eo5EkmdLvZrONzi046iC2</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Com Lag: 2+2=5</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>21</th>\n",
       "      <td>1oW3v5Har9mvXnGk0x4fHm</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Hail To the Thief</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>22</th>\n",
       "      <td>6svTt5o2lUgIrgYDKVmdnD</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>I Might Be Wrong</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>23</th>\n",
       "      <td>6V9YnBmFjWmXCBaUVRCVXP</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Amnesiac</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>24</th>\n",
       "      <td>19RUXBFyM4PpmrLRdtqWbp</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Kid A</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>25</th>\n",
       "      <td>7dxKtc08dYeRVHt3p9CZJn</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>OK Computer</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>26</th>\n",
       "      <td>500FEaUzn8lN9zWFyZG5C2</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>The Bends</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>27</th>\n",
       "      <td>6400dnyeDyD2mIFHfkwHXN</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Pablo Honey</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>28</th>\n",
       "      <td>4g9Jfls8z2nbQxj5PiXkiy</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Blue &amp; Lonesome</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>29</th>\n",
       "      <td>4fhWcu56Bbh5wALuTouFVW</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Havana Moon (Live)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>30</th>\n",
       "      <td>3PbRKFafwE7Of8e4dTee72</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Totally Stripped (Live)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>31</th>\n",
       "      <td>5eTqRwTGKPBUiUuN1rFaXD</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Live 1965: Music From Charlie Is My Darling (L...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>32</th>\n",
       "      <td>3CHu7qW160uqPZHW3TMZ1l</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Shine A Light</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>33</th>\n",
       "      <td>4FTHynKEtuP7eppERNfjyG</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>A Bigger Bang (2009 Re-Mastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>34</th>\n",
       "      <td>50UGtgNA5bq1c0BDjPfmbD</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Live Licks</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>35</th>\n",
       "      <td>0ZGddnvcVzHVHfE3WW1tV5</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Bridges To Babylon (2009 Re-Mastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>36</th>\n",
       "      <td>4M8Q1L9PZq0xK5tLUpO3jd</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Stripped</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>37</th>\n",
       "      <td>62ZT16LY1phGM0O8x5qW1z</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Voodoo Lounge (2009 Re-Mastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>38</th>\n",
       "      <td>1W1UJulgICjFDyYIMUwRs7</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Flashpoint</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>39</th>\n",
       "      <td>25mfHGJNQkluvIqedXHSx3</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Steel Wheels (2009 Re-Mastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>40</th>\n",
       "      <td>1TpcI1LEFVhBvDPSTMPGFG</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Dirty Work</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>41</th>\n",
       "      <td>1WSfNoPDPzgyKFN6OSYWUx</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Dirty Work (Remastered 2009)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>42</th>\n",
       "      <td>064eFGemsrDcMvgRZ0gqtw</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Undercover (2009 Re-Mastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>43</th>\n",
       "      <td>0hxrNynMDh5QeyALlf1CdS</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Still Life</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>44</th>\n",
       "      <td>1YvnuYGlblQ5vLnOhaZzpn</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Tattoo You (2009 Re-Mastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>45</th>\n",
       "      <td>2wZgoXS06wSdu9C0ZJOvlc</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Emotional Rescue (2009 Re-Mastered)</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>46</th>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Some Girls</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>47</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                       _id         artist_name  \\\n",
       "0   5XfJmldgWzrc1AIdbBaVZn         The Beatles   \n",
       "1   5ju5Ouzan3QwXqQt1Tihbh         The Beatles   \n",
       "2   2pCqZLeavM2BMovJXsJEIV         The Beatles   \n",
       "3   2Pqkn9Dq2DFtdfkKAeqgMd         The Beatles   \n",
       "4   47bcKzmKgmMPHXNVOWpLiu         The Beatles   \n",
       "5   03Qh833fEdVT30Pfs93ea6         The Beatles   \n",
       "6   6P9yO0ukhOx3dvmhGKeYoC         The Beatles   \n",
       "7   1PULmKbHeOqlkIwcDMNwD4         The Beatles   \n",
       "8   0PYyrqs9NXtxPhf0CZkq2L         The Beatles   \n",
       "9   3OdI6e43crvyAHhaqpxSyz         The Beatles   \n",
       "10  19K3IHYeVkUTjcBHGfbCOi         The Beatles   \n",
       "11  7BgGBZndAvDlKOcwe5rscZ         The Beatles   \n",
       "12  71Mwd9tntFQYUk4k2DwA0D         The Beatles   \n",
       "13  1DBkJIEoeHrTX4WCBQGcCi           Radiohead   \n",
       "14  3nkEsxmIX0zRNXGAexaHAn         The Beatles   \n",
       "15  7gDXyW16byCQOgK965BRzn         The Beatles   \n",
       "16  6vuykQgDLUCiZ7YggIpLM9           Radiohead   \n",
       "17  47xaqCsJcYFWqD1gwujl1T           Radiohead   \n",
       "18  7eyQXxuf2nGj9d2367Gi5f           Radiohead   \n",
       "19  36lJLPoPPOKNFddTAcirnc           Radiohead   \n",
       "20  6Eo5EkmdLvZrONzi046iC2           Radiohead   \n",
       "21  1oW3v5Har9mvXnGk0x4fHm           Radiohead   \n",
       "22  6svTt5o2lUgIrgYDKVmdnD           Radiohead   \n",
       "23  6V9YnBmFjWmXCBaUVRCVXP           Radiohead   \n",
       "24  19RUXBFyM4PpmrLRdtqWbp           Radiohead   \n",
       "25  7dxKtc08dYeRVHt3p9CZJn           Radiohead   \n",
       "26  500FEaUzn8lN9zWFyZG5C2           Radiohead   \n",
       "27  6400dnyeDyD2mIFHfkwHXN           Radiohead   \n",
       "28  4g9Jfls8z2nbQxj5PiXkiy  The Rolling Stones   \n",
       "29  4fhWcu56Bbh5wALuTouFVW  The Rolling Stones   \n",
       "30  3PbRKFafwE7Of8e4dTee72  The Rolling Stones   \n",
       "31  5eTqRwTGKPBUiUuN1rFaXD  The Rolling Stones   \n",
       "32  3CHu7qW160uqPZHW3TMZ1l  The Rolling Stones   \n",
       "33  4FTHynKEtuP7eppERNfjyG  The Rolling Stones   \n",
       "34  50UGtgNA5bq1c0BDjPfmbD  The Rolling Stones   \n",
       "35  0ZGddnvcVzHVHfE3WW1tV5  The Rolling Stones   \n",
       "36  4M8Q1L9PZq0xK5tLUpO3jd  The Rolling Stones   \n",
       "37  62ZT16LY1phGM0O8x5qW1z  The Rolling Stones   \n",
       "38  1W1UJulgICjFDyYIMUwRs7  The Rolling Stones   \n",
       "39  25mfHGJNQkluvIqedXHSx3  The Rolling Stones   \n",
       "40  1TpcI1LEFVhBvDPSTMPGFG  The Rolling Stones   \n",
       "41  1WSfNoPDPzgyKFN6OSYWUx  The Rolling Stones   \n",
       "42  064eFGemsrDcMvgRZ0gqtw  The Rolling Stones   \n",
       "43  0hxrNynMDh5QeyALlf1CdS  The Rolling Stones   \n",
       "44  1YvnuYGlblQ5vLnOhaZzpn  The Rolling Stones   \n",
       "45  2wZgoXS06wSdu9C0ZJOvlc  The Rolling Stones   \n",
       "46  54sqbAXxR1jFfyXb1WvrHK  The Rolling Stones   \n",
       "47  6FjXxl9VLURGuubdXUn2J3  The Rolling Stones   \n",
       "\n",
       "                                                 name  \n",
       "0                          Live At The Hollywood Bowl  \n",
       "1                                      1 (Remastered)  \n",
       "2                              Let It Be (Remastered)  \n",
       "3                             Abbey Road (Remastered)  \n",
       "4                       Yellow Submarine (Remastered)  \n",
       "5                            The Beatles (Remastered)  \n",
       "6                   Magical Mystery Tour (Remastered)  \n",
       "7   Sgt. Pepper's Lonely Hearts Club Band (Remaste...  \n",
       "8                               Revolver (Remastered)  \n",
       "9                            Rubber Soul (Remastered)  \n",
       "10                                 Help! (Remastered)  \n",
       "11                      Beatles For Sale (Remastered)  \n",
       "12                    A Hard Day's Night (Remastered)  \n",
       "13                                  The King Of Limbs  \n",
       "14                      With The Beatles (Remastered)  \n",
       "15                      Please Please Me (Remastered)  \n",
       "16                                 A Moon Shaped Pool  \n",
       "17                                   TKOL RMX 1234567  \n",
       "18                                        In Rainbows  \n",
       "19                                 In Rainbows Disk 2  \n",
       "20                                     Com Lag: 2+2=5  \n",
       "21                                  Hail To the Thief  \n",
       "22                                   I Might Be Wrong  \n",
       "23                                           Amnesiac  \n",
       "24                                              Kid A  \n",
       "25                                        OK Computer  \n",
       "26                                          The Bends  \n",
       "27                                        Pablo Honey  \n",
       "28                                    Blue & Lonesome  \n",
       "29                                 Havana Moon (Live)  \n",
       "30                            Totally Stripped (Live)  \n",
       "31  Live 1965: Music From Charlie Is My Darling (L...  \n",
       "32                                      Shine A Light  \n",
       "33                   A Bigger Bang (2009 Re-Mastered)  \n",
       "34                                         Live Licks  \n",
       "35              Bridges To Babylon (2009 Re-Mastered)  \n",
       "36                                           Stripped  \n",
       "37                   Voodoo Lounge (2009 Re-Mastered)  \n",
       "38                                         Flashpoint  \n",
       "39                    Steel Wheels (2009 Re-Mastered)  \n",
       "40                                         Dirty Work  \n",
       "41                       Dirty Work (Remastered 2009)  \n",
       "42                      Undercover (2009 Re-Mastered)  \n",
       "43                                         Still Life  \n",
       "44                      Tattoo You (2009 Re-Mastered)  \n",
       "45                Emotional Rescue (2009 Re-Mastered)  \n",
       "46                                         Some Girls  \n",
       "47                        Some Girls (Deluxe Version)  "
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pd.DataFrame(list(albums.find({}, ['name', 'artist_name'])))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "According to the [Spotify documentation](https://developer.spotify.com/web-api/object-model/#track-object), some objects returned have only a bit of the data, and contain a `href` field for where to find the rest. The track details in the album documents fit that bill, so let's find the full track information.\n",
    "\n",
    "While doing this, not that Spotify will rate-limit the requests, so we have to include a loop to respect the timeout and retry the requests after the appropriate time."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "def get_tracks(album_id):\n",
    "    album = albums.find_one({'_id': album_id})\n",
    "    for t in album['tracks']['items']:\n",
    "        for _ in range(10):\n",
    "            try:\n",
    "                with urllib.request.urlopen(t['href']) as f:\n",
    "                    track = json.loads(f.read().decode('utf-8'))\n",
    "                    track['_id'] = track['id']\n",
    "                    track['album_id'] = album_id\n",
    "                    tracks.replace_one({'_id': track['_id']}, track, upsert=True)\n",
    "                    break\n",
    "            except urllib.error.HTTPError as e:\n",
    "                print(\"Rate limited. Pausing for\", e.info()['Retry-After'])\n",
    "                time.sleep(int(e.info()['Retry-After']) + 0.5)\n",
    "                continue"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 45,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Rate limited. Pausing for 4\n",
      "Rate limited. Pausing for 4\n",
      "Rate limited. Pausing for 4\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "383"
      ]
     },
     "execution_count": 45,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "for album in albums.find():\n",
    "    get_tracks(album['_id'])\n",
    "tracks.find().count()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Rate limited. Pausing for 4\n",
      "Rate limited. Pausing for 3\n",
      "Rate limited. Pausing for 0\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "671"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "for album in albums.find({'artist_id': stones_id}):\n",
    "    get_tracks(album['_id'])\n",
    "tracks.find().count()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>0</th>\n",
       "      <th>1</th>\n",
       "      <th>2</th>\n",
       "      <th>3</th>\n",
       "      <th>4</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>_id</th>\n",
       "      <td>1lLK53LFXWvPzPYtlJIvt0</td>\n",
       "      <td>0TWa6TQFWHSG5QdSWuTMve</td>\n",
       "      <td>74tlMxJ8wF0sNp93GBEPdK</td>\n",
       "      <td>0Za26pWVLQpKfXmb9FX10S</td>\n",
       "      <td>6295nz7PVXm49Ihqwm39Ew</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>acousticness</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>album</th>\n",
       "      <td>{'name': 'Totally Stripped (Live)', 'type': 'a...</td>\n",
       "      <td>{'name': 'Totally Stripped (Live)', 'type': 'a...</td>\n",
       "      <td>{'name': 'Totally Stripped (Live)', 'type': 'a...</td>\n",
       "      <td>{'name': 'Some Girls', 'type': 'album', 'artis...</td>\n",
       "      <td>{'name': 'Some Girls', 'type': 'album', 'artis...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>album_id</th>\n",
       "      <td>3PbRKFafwE7Of8e4dTee72</td>\n",
       "      <td>3PbRKFafwE7Of8e4dTee72</td>\n",
       "      <td>3PbRKFafwE7Of8e4dTee72</td>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>analysis_url</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>artist_id</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>artist_name</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>artists</th>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>available_markets</th>\n",
       "      <td>[GB]</td>\n",
       "      <td>[GB]</td>\n",
       "      <td>[GB]</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>complexity</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>ctitle</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>danceability</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>disc_number</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>duration_ms</th>\n",
       "      <td>305280</td>\n",
       "      <td>240333</td>\n",
       "      <td>293773</td>\n",
       "      <td>187440</td>\n",
       "      <td>204960</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>energy</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>explicit</th>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>external_ids</th>\n",
       "      <td>{'isrc': 'GBCBR1500394'}</td>\n",
       "      <td>{'isrc': 'GBCBR1500393'}</td>\n",
       "      <td>{'isrc': 'GBCBR1500392'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800007'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800008'}</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>external_urls</th>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/1l...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/0T...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/74...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/0Z...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/62...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>gloom</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>href</th>\n",
       "      <td>https://api.spotify.com/v1/tracks/1lLK53LFXWvP...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/0TWa6TQFWHSG...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/74tlMxJ8wF0s...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/0Za26pWVLQpK...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6295nz7PVXm4...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>id</th>\n",
       "      <td>1lLK53LFXWvPzPYtlJIvt0</td>\n",
       "      <td>0TWa6TQFWHSG5QdSWuTMve</td>\n",
       "      <td>74tlMxJ8wF0sNp93GBEPdK</td>\n",
       "      <td>0Za26pWVLQpKfXmb9FX10S</td>\n",
       "      <td>6295nz7PVXm49Ihqwm39Ew</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>instrumentalness</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>key</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>liveness</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>loudness</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>lyrical_density</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>lyrics</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>mode</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>name</th>\n",
       "      <td>Faraway Eyes - Live</td>\n",
       "      <td>Dead Flowers - Live</td>\n",
       "      <td>Honky Tonk Women - Live</td>\n",
       "      <td>Respectable - Remastered</td>\n",
       "      <td>Before They Make Me Run - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>original_lyrics</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>popularity</th>\n",
       "      <td>15</td>\n",
       "      <td>17</td>\n",
       "      <td>18</td>\n",
       "      <td>30</td>\n",
       "      <td>25</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>preview_url</th>\n",
       "      <td>https://p.scdn.co/mp3-preview/5afdaabfa28e067f...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/e3900e8c4200974d...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/671f51874a70b3f7...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/f5e932d9acc6a359...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/ee5832b597975b27...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>sentiment</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>speechiness</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>tempo</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>time_signature</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>track_href</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>track_number</th>\n",
       "      <td>4</td>\n",
       "      <td>3</td>\n",
       "      <td>2</td>\n",
       "      <td>7</td>\n",
       "      <td>8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>type</th>\n",
       "      <td>track</td>\n",
       "      <td>track</td>\n",
       "      <td>track</td>\n",
       "      <td>track</td>\n",
       "      <td>track</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>uri</th>\n",
       "      <td>spotify:track:1lLK53LFXWvPzPYtlJIvt0</td>\n",
       "      <td>spotify:track:0TWa6TQFWHSG5QdSWuTMve</td>\n",
       "      <td>spotify:track:74tlMxJ8wF0sNp93GBEPdK</td>\n",
       "      <td>spotify:track:0Za26pWVLQpKfXmb9FX10S</td>\n",
       "      <td>spotify:track:6295nz7PVXm49Ihqwm39Ew</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>valence</th>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                                   0  \\\n",
       "_id                                           1lLK53LFXWvPzPYtlJIvt0   \n",
       "acousticness                                                     NaN   \n",
       "album              {'name': 'Totally Stripped (Live)', 'type': 'a...   \n",
       "album_id                                      3PbRKFafwE7Of8e4dTee72   \n",
       "analysis_url                                                     NaN   \n",
       "artist_id                                                        NaN   \n",
       "artist_name                                                      NaN   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets                                               [GB]   \n",
       "complexity                                                       NaN   \n",
       "ctitle                                                           NaN   \n",
       "danceability                                                     NaN   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   305280   \n",
       "energy                                                           NaN   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCBR1500394'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/1l...   \n",
       "gloom                                                            NaN   \n",
       "href               https://api.spotify.com/v1/tracks/1lLK53LFXWvP...   \n",
       "id                                            1lLK53LFXWvPzPYtlJIvt0   \n",
       "instrumentalness                                                 NaN   \n",
       "key                                                              NaN   \n",
       "liveness                                                         NaN   \n",
       "loudness                                                         NaN   \n",
       "lyrical_density                                                  NaN   \n",
       "lyrics                                                           NaN   \n",
       "mode                                                             NaN   \n",
       "name                                             Faraway Eyes - Live   \n",
       "original_lyrics                                                  NaN   \n",
       "popularity                                                        15   \n",
       "preview_url        https://p.scdn.co/mp3-preview/5afdaabfa28e067f...   \n",
       "sentiment                                                        NaN   \n",
       "speechiness                                                      NaN   \n",
       "tempo                                                            NaN   \n",
       "time_signature                                                   NaN   \n",
       "track_href                                                       NaN   \n",
       "track_number                                                       4   \n",
       "type                                                           track   \n",
       "uri                             spotify:track:1lLK53LFXWvPzPYtlJIvt0   \n",
       "valence                                                          NaN   \n",
       "\n",
       "                                                                   1  \\\n",
       "_id                                           0TWa6TQFWHSG5QdSWuTMve   \n",
       "acousticness                                                     NaN   \n",
       "album              {'name': 'Totally Stripped (Live)', 'type': 'a...   \n",
       "album_id                                      3PbRKFafwE7Of8e4dTee72   \n",
       "analysis_url                                                     NaN   \n",
       "artist_id                                                        NaN   \n",
       "artist_name                                                      NaN   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets                                               [GB]   \n",
       "complexity                                                       NaN   \n",
       "ctitle                                                           NaN   \n",
       "danceability                                                     NaN   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   240333   \n",
       "energy                                                           NaN   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCBR1500393'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/0T...   \n",
       "gloom                                                            NaN   \n",
       "href               https://api.spotify.com/v1/tracks/0TWa6TQFWHSG...   \n",
       "id                                            0TWa6TQFWHSG5QdSWuTMve   \n",
       "instrumentalness                                                 NaN   \n",
       "key                                                              NaN   \n",
       "liveness                                                         NaN   \n",
       "loudness                                                         NaN   \n",
       "lyrical_density                                                  NaN   \n",
       "lyrics                                                           NaN   \n",
       "mode                                                             NaN   \n",
       "name                                             Dead Flowers - Live   \n",
       "original_lyrics                                                  NaN   \n",
       "popularity                                                        17   \n",
       "preview_url        https://p.scdn.co/mp3-preview/e3900e8c4200974d...   \n",
       "sentiment                                                        NaN   \n",
       "speechiness                                                      NaN   \n",
       "tempo                                                            NaN   \n",
       "time_signature                                                   NaN   \n",
       "track_href                                                       NaN   \n",
       "track_number                                                       3   \n",
       "type                                                           track   \n",
       "uri                             spotify:track:0TWa6TQFWHSG5QdSWuTMve   \n",
       "valence                                                          NaN   \n",
       "\n",
       "                                                                   2  \\\n",
       "_id                                           74tlMxJ8wF0sNp93GBEPdK   \n",
       "acousticness                                                     NaN   \n",
       "album              {'name': 'Totally Stripped (Live)', 'type': 'a...   \n",
       "album_id                                      3PbRKFafwE7Of8e4dTee72   \n",
       "analysis_url                                                     NaN   \n",
       "artist_id                                                        NaN   \n",
       "artist_name                                                      NaN   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets                                               [GB]   \n",
       "complexity                                                       NaN   \n",
       "ctitle                                                           NaN   \n",
       "danceability                                                     NaN   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   293773   \n",
       "energy                                                           NaN   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCBR1500392'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/74...   \n",
       "gloom                                                            NaN   \n",
       "href               https://api.spotify.com/v1/tracks/74tlMxJ8wF0s...   \n",
       "id                                            74tlMxJ8wF0sNp93GBEPdK   \n",
       "instrumentalness                                                 NaN   \n",
       "key                                                              NaN   \n",
       "liveness                                                         NaN   \n",
       "loudness                                                         NaN   \n",
       "lyrical_density                                                  NaN   \n",
       "lyrics                                                           NaN   \n",
       "mode                                                             NaN   \n",
       "name                                         Honky Tonk Women - Live   \n",
       "original_lyrics                                                  NaN   \n",
       "popularity                                                        18   \n",
       "preview_url        https://p.scdn.co/mp3-preview/671f51874a70b3f7...   \n",
       "sentiment                                                        NaN   \n",
       "speechiness                                                      NaN   \n",
       "tempo                                                            NaN   \n",
       "time_signature                                                   NaN   \n",
       "track_href                                                       NaN   \n",
       "track_number                                                       2   \n",
       "type                                                           track   \n",
       "uri                             spotify:track:74tlMxJ8wF0sNp93GBEPdK   \n",
       "valence                                                          NaN   \n",
       "\n",
       "                                                                   3  \\\n",
       "_id                                           0Za26pWVLQpKfXmb9FX10S   \n",
       "acousticness                                                     NaN   \n",
       "album              {'name': 'Some Girls', 'type': 'album', 'artis...   \n",
       "album_id                                      54sqbAXxR1jFfyXb1WvrHK   \n",
       "analysis_url                                                     NaN   \n",
       "artist_id                                                        NaN   \n",
       "artist_name                                                      NaN   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "complexity                                                       NaN   \n",
       "ctitle                                                           NaN   \n",
       "danceability                                                     NaN   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   187440   \n",
       "energy                                                           NaN   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCJN7800007'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/0Z...   \n",
       "gloom                                                            NaN   \n",
       "href               https://api.spotify.com/v1/tracks/0Za26pWVLQpK...   \n",
       "id                                            0Za26pWVLQpKfXmb9FX10S   \n",
       "instrumentalness                                                 NaN   \n",
       "key                                                              NaN   \n",
       "liveness                                                         NaN   \n",
       "loudness                                                         NaN   \n",
       "lyrical_density                                                  NaN   \n",
       "lyrics                                                           NaN   \n",
       "mode                                                             NaN   \n",
       "name                                        Respectable - Remastered   \n",
       "original_lyrics                                                  NaN   \n",
       "popularity                                                        30   \n",
       "preview_url        https://p.scdn.co/mp3-preview/f5e932d9acc6a359...   \n",
       "sentiment                                                        NaN   \n",
       "speechiness                                                      NaN   \n",
       "tempo                                                            NaN   \n",
       "time_signature                                                   NaN   \n",
       "track_href                                                       NaN   \n",
       "track_number                                                       7   \n",
       "type                                                           track   \n",
       "uri                             spotify:track:0Za26pWVLQpKfXmb9FX10S   \n",
       "valence                                                          NaN   \n",
       "\n",
       "                                                                   4  \n",
       "_id                                           6295nz7PVXm49Ihqwm39Ew  \n",
       "acousticness                                                     NaN  \n",
       "album              {'name': 'Some Girls', 'type': 'album', 'artis...  \n",
       "album_id                                      54sqbAXxR1jFfyXb1WvrHK  \n",
       "analysis_url                                                     NaN  \n",
       "artist_id                                                        NaN  \n",
       "artist_name                                                      NaN  \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...  \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...  \n",
       "complexity                                                       NaN  \n",
       "ctitle                                                           NaN  \n",
       "danceability                                                     NaN  \n",
       "disc_number                                                        1  \n",
       "duration_ms                                                   204960  \n",
       "energy                                                           NaN  \n",
       "explicit                                                       False  \n",
       "external_ids                                {'isrc': 'GBCJN7800008'}  \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/62...  \n",
       "gloom                                                            NaN  \n",
       "href               https://api.spotify.com/v1/tracks/6295nz7PVXm4...  \n",
       "id                                            6295nz7PVXm49Ihqwm39Ew  \n",
       "instrumentalness                                                 NaN  \n",
       "key                                                              NaN  \n",
       "liveness                                                         NaN  \n",
       "loudness                                                         NaN  \n",
       "lyrical_density                                                  NaN  \n",
       "lyrics                                                           NaN  \n",
       "mode                                                             NaN  \n",
       "name                            Before They Make Me Run - Remastered  \n",
       "original_lyrics                                                  NaN  \n",
       "popularity                                                        25  \n",
       "preview_url        https://p.scdn.co/mp3-preview/ee5832b597975b27...  \n",
       "sentiment                                                        NaN  \n",
       "speechiness                                                      NaN  \n",
       "tempo                                                            NaN  \n",
       "time_signature                                                   NaN  \n",
       "track_href                                                       NaN  \n",
       "track_number                                                       8  \n",
       "type                                                           track  \n",
       "uri                             spotify:track:6295nz7PVXm49Ihqwm39Ew  \n",
       "valence                                                          NaN  "
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pd.DataFrame(list(tracks.find())).head().T"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 49,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'_id': '4edArG2VehvJdwOZfYOxtK'}"
      ]
     },
     "execution_count": 49,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "tracks.find_one({}, 'album.id')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Tag tracks with artist<a name=\"tagtrackwithartist\"></a>\n",
    "Again, make an easy tag for the artist of each track.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "for t in tracks.find({}, ['artists']):\n",
    "    for a in t['artists']:\n",
    "        if a['id'] in [beatles_id, stones_id]:\n",
    "            tracks.update_one({'_id': t['_id']}, \n",
    "                      {'$set': {'artist_name': a['name'],\n",
    "                                'artist_id': a['id']}})"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'Duke Ellington',\n",
       " 'George Martin',\n",
       " 'Jimi Hendrix',\n",
       " 'Radiohead',\n",
       " 'The Beatles',\n",
       " 'The Rolling Stones'}"
      ]
     },
     "execution_count": 23,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "set(t['artist_name'] for t in tracks.find({}))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>album_id</th>\n",
       "      <th>album_name</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>track_id</th>\n",
       "      <th>track_name</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>4edArG2VehvJdwOZfYOxtK</td>\n",
       "      <td>Twist And Shout - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>150EAeMGWJRubuH8zyx7h8</td>\n",
       "      <td>She's A Woman - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1fVeHYkyMxrjbjRAD9uWsZ</td>\n",
       "      <td>Dizzy Miss Lizzy - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0GRplBEB2FWCKutwMmS6nY</td>\n",
       "      <td>Ticket To Ride - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1eVymk74iroqhsZxm0Vy3g</td>\n",
       "      <td>Can't Buy Me Love - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>2p5a9gu6NECVSvBtGSU1vm</td>\n",
       "      <td>Things We Said Today - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1HyLh5cctOnP186CBi8bhm</td>\n",
       "      <td>Roll Over Beethoven - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>7fZEWm7TAL2oZDyiYrrgnk</td>\n",
       "      <td>Boys - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>8</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>21nhooOxso7CCoHPE73w4L</td>\n",
       "      <td>A Hard Day's Night - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1alcPfZWUHh01l4Fnoo5Jt</td>\n",
       "      <td>Help! - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>10</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>24gUDXSQysdnTaRpbWtYlK</td>\n",
       "      <td>All My Loving - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>2VmFFbXSJzYxzEJSAeI0lM</td>\n",
       "      <td>She Loves You - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>6b8lhQ86u5MddlmXulslpD</td>\n",
       "      <td>Long Tall Sally - Live / Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1oKfZ5MTCSrv07hsHqJ0JS</td>\n",
       "      <td>You Can't Do That - Live / Bonus Track</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>14</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>04gBqA2mubcTgFqL9Domlj</td>\n",
       "      <td>I Want To Hold Your Hand - Live / Bonus Track</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>15</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>79QDgDoBbS7pCrOjIH7ByA</td>\n",
       "      <td>Everybody’s Trying To Be My Baby - Live / Bonu...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>16</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1yV2I5c6efVSqSiuv9H2AD</td>\n",
       "      <td>Baby's In Black - Live / Bonus Track</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>17</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>5JT7CoUSGNk7mMNkHMQjqr</td>\n",
       "      <td>Love Me Do - Mono / Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>18</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>2Q2Gu7Bv8iLenuygtBgDUw</td>\n",
       "      <td>From Me To You - Mono / Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>19</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>2Fk411Ix3qnMG8t8Qa74ZX</td>\n",
       "      <td>She Loves You - Mono / Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>20</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>4DRBaZ760gyk7LWnaJFqsJ</td>\n",
       "      <td>I Want To Hold Your Hand - Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>21</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>7pQAq14Z73YUFMtxCyt0bG</td>\n",
       "      <td>Can't Buy Me Love - Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>22</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0mNQUZEATk2uItMUtiLWK5</td>\n",
       "      <td>A Hard Day's Night - Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>23</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0Gm34HBxrXlaAf1jdJMjx2</td>\n",
       "      <td>I Feel Fine - Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>24</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>3nhJDVdUrm6DnDW4iBfpKz</td>\n",
       "      <td>Eight Days A Week - Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>25</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>6pkjW5srxjzRSKKMrl7et8</td>\n",
       "      <td>Ticket To Ride - Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>26</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1dfuJYDSIc41cw5RPsaCF1</td>\n",
       "      <td>Help! - Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>27</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>63uskN0xLezVg4281wzeQn</td>\n",
       "      <td>Yesterday - Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>28</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0vXGSlE4ft3n5JHZMHHSIj</td>\n",
       "      <td>Day Tripper - Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>29</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0Lckblu9CJUXOeMV0XY3b9</td>\n",
       "      <td>We Can Work It Out - Remastered 2015</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>641</th>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "      <td>Some Girls</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>5ZesVHq9Nox8YjOR1kCpbN</td>\n",
       "      <td>Just My Imagination (Running Away With Me) - R...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>642</th>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "      <td>Some Girls</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>6hLpp90qMxG3TMvMzwJsiQ</td>\n",
       "      <td>Some Girls - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>643</th>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "      <td>Some Girls</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>3WqR7lRoHEvG0ExkAqBkPj</td>\n",
       "      <td>Lies - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>644</th>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "      <td>Some Girls</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>06PEXSCNl8Xwf2633TdNnx</td>\n",
       "      <td>Far Away Eyes - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>645</th>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "      <td>Some Girls</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>0Za26pWVLQpKfXmb9FX10S</td>\n",
       "      <td>Respectable - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>646</th>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "      <td>Some Girls</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>6295nz7PVXm49Ihqwm39Ew</td>\n",
       "      <td>Before They Make Me Run - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>647</th>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "      <td>Some Girls</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>0832Tptls5YicHPGgw7ssP</td>\n",
       "      <td>Beast Of Burden - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>648</th>\n",
       "      <td>54sqbAXxR1jFfyXb1WvrHK</td>\n",
       "      <td>Some Girls</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>6yq33zsqWCd8cYXQdtAFZ9</td>\n",
       "      <td>Shattered - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>649</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>5pTWpY8l7B1XcQnijEFGFj</td>\n",
       "      <td>Miss You - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>650</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>4E8qFhiuYAWEYYAsYIf4dW</td>\n",
       "      <td>When The Whip Comes Down - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>651</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>7sDQlyQACyT7mNHFwwEMI7</td>\n",
       "      <td>Just My Imagination (Running Away With Me) - R...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>652</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>48bJ1sWhJKdB8M43uqi924</td>\n",
       "      <td>Some Girls - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>653</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>6362zAWHGgbrQaoeCFZpuO</td>\n",
       "      <td>Lies - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>654</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>4RlD0KvoqPZy5n9Zi76X9l</td>\n",
       "      <td>Far Away Eyes - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>655</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>33PXyHrkIHxp6PBVPlQGx7</td>\n",
       "      <td>Respectable - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>656</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>7vsPbFinz35mfQO5d6oL0l</td>\n",
       "      <td>Before They Make Me Run - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>657</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>7pfVe0VrMK5QhTaAYzkuYn</td>\n",
       "      <td>Beast Of Burden - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>658</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>2giRM7RrP6utWLAb8jnFFk</td>\n",
       "      <td>Shattered - Remastered</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>659</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>1V25DJ3ghDJs8m58jbVMbf</td>\n",
       "      <td>Claudine</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>660</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>3rNTjyvxae83nJCLMxoVSW</td>\n",
       "      <td>So Young</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>661</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>5oAcuuY504M7eDCln5Xq89</td>\n",
       "      <td>Do You Think I Really Care</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>662</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>1ZBnd9Z80QPQ58BaL5OWlP</td>\n",
       "      <td>When You're Gone</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>663</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>624njB7Ny3mlA46QokEin9</td>\n",
       "      <td>No Spare Parts</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>664</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>0WpZfMNsNhiEJ8RSLyjElp</td>\n",
       "      <td>Don't Be A Stranger</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>665</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>0Baq94uZKy4pPvnc40xjPX</td>\n",
       "      <td>We Had It All</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>666</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>4oOU3GgiZblheOI9JUmM1f</td>\n",
       "      <td>Tallahassee Lassie</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>667</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>4LW3JaAze7gF8DpPBb2zzl</td>\n",
       "      <td>I Love You Too Much</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>668</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>4LSyTg4sm3N99Pcckw9zjf</td>\n",
       "      <td>Keep Up Blues</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>669</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>3u06WsJ1KtvEqmmmZqy76J</td>\n",
       "      <td>You Win Again</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>670</th>\n",
       "      <td>6FjXxl9VLURGuubdXUn2J3</td>\n",
       "      <td>Some Girls (Deluxe Version)</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>7DgRvvPcJlxks2lNpudsuT</td>\n",
       "      <td>Petrol Blues</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>671 rows × 5 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                   album_id                   album_name         artist_name  \\\n",
       "0    5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "1    5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "2    5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "3    5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "4    5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "5    5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "6    5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "7    5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "8    5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "9    5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "10   5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "11   5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "12   5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "13   5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "14   5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "15   5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "16   5XfJmldgWzrc1AIdbBaVZn   Live At The Hollywood Bowl         The Beatles   \n",
       "17   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "18   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "19   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "20   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "21   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "22   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "23   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "24   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "25   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "26   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "27   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "28   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "29   5ju5Ouzan3QwXqQt1Tihbh               1 (Remastered)         The Beatles   \n",
       "..                      ...                          ...                 ...   \n",
       "641  54sqbAXxR1jFfyXb1WvrHK                   Some Girls  The Rolling Stones   \n",
       "642  54sqbAXxR1jFfyXb1WvrHK                   Some Girls  The Rolling Stones   \n",
       "643  54sqbAXxR1jFfyXb1WvrHK                   Some Girls  The Rolling Stones   \n",
       "644  54sqbAXxR1jFfyXb1WvrHK                   Some Girls  The Rolling Stones   \n",
       "645  54sqbAXxR1jFfyXb1WvrHK                   Some Girls  The Rolling Stones   \n",
       "646  54sqbAXxR1jFfyXb1WvrHK                   Some Girls  The Rolling Stones   \n",
       "647  54sqbAXxR1jFfyXb1WvrHK                   Some Girls  The Rolling Stones   \n",
       "648  54sqbAXxR1jFfyXb1WvrHK                   Some Girls  The Rolling Stones   \n",
       "649  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "650  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "651  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "652  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "653  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "654  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "655  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "656  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "657  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "658  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "659  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "660  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "661  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "662  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "663  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "664  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "665  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "666  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "667  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "668  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "669  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "670  6FjXxl9VLURGuubdXUn2J3  Some Girls (Deluxe Version)  The Rolling Stones   \n",
       "\n",
       "                   track_id                                         track_name  \n",
       "0    4edArG2VehvJdwOZfYOxtK                Twist And Shout - Live / Remastered  \n",
       "1    150EAeMGWJRubuH8zyx7h8                  She's A Woman - Live / Remastered  \n",
       "2    1fVeHYkyMxrjbjRAD9uWsZ               Dizzy Miss Lizzy - Live / Remastered  \n",
       "3    0GRplBEB2FWCKutwMmS6nY                 Ticket To Ride - Live / Remastered  \n",
       "4    1eVymk74iroqhsZxm0Vy3g              Can't Buy Me Love - Live / Remastered  \n",
       "5    2p5a9gu6NECVSvBtGSU1vm           Things We Said Today - Live / Remastered  \n",
       "6    1HyLh5cctOnP186CBi8bhm            Roll Over Beethoven - Live / Remastered  \n",
       "7    7fZEWm7TAL2oZDyiYrrgnk                           Boys - Live / Remastered  \n",
       "8    21nhooOxso7CCoHPE73w4L             A Hard Day's Night - Live / Remastered  \n",
       "9    1alcPfZWUHh01l4Fnoo5Jt                          Help! - Live / Remastered  \n",
       "10   24gUDXSQysdnTaRpbWtYlK                  All My Loving - Live / Remastered  \n",
       "11   2VmFFbXSJzYxzEJSAeI0lM                  She Loves You - Live / Remastered  \n",
       "12   6b8lhQ86u5MddlmXulslpD                Long Tall Sally - Live / Remastered  \n",
       "13   1oKfZ5MTCSrv07hsHqJ0JS             You Can't Do That - Live / Bonus Track  \n",
       "14   04gBqA2mubcTgFqL9Domlj      I Want To Hold Your Hand - Live / Bonus Track  \n",
       "15   79QDgDoBbS7pCrOjIH7ByA  Everybody’s Trying To Be My Baby - Live / Bonu...  \n",
       "16   1yV2I5c6efVSqSiuv9H2AD               Baby's In Black - Live / Bonus Track  \n",
       "17   5JT7CoUSGNk7mMNkHMQjqr                Love Me Do - Mono / Remastered 2015  \n",
       "18   2Q2Gu7Bv8iLenuygtBgDUw            From Me To You - Mono / Remastered 2015  \n",
       "19   2Fk411Ix3qnMG8t8Qa74ZX             She Loves You - Mono / Remastered 2015  \n",
       "20   4DRBaZ760gyk7LWnaJFqsJ         I Want To Hold Your Hand - Remastered 2015  \n",
       "21   7pQAq14Z73YUFMtxCyt0bG                Can't Buy Me Love - Remastered 2015  \n",
       "22   0mNQUZEATk2uItMUtiLWK5               A Hard Day's Night - Remastered 2015  \n",
       "23   0Gm34HBxrXlaAf1jdJMjx2                      I Feel Fine - Remastered 2015  \n",
       "24   3nhJDVdUrm6DnDW4iBfpKz                Eight Days A Week - Remastered 2015  \n",
       "25   6pkjW5srxjzRSKKMrl7et8                   Ticket To Ride - Remastered 2015  \n",
       "26   1dfuJYDSIc41cw5RPsaCF1                            Help! - Remastered 2015  \n",
       "27   63uskN0xLezVg4281wzeQn                        Yesterday - Remastered 2015  \n",
       "28   0vXGSlE4ft3n5JHZMHHSIj                      Day Tripper - Remastered 2015  \n",
       "29   0Lckblu9CJUXOeMV0XY3b9               We Can Work It Out - Remastered 2015  \n",
       "..                      ...                                                ...  \n",
       "641  5ZesVHq9Nox8YjOR1kCpbN  Just My Imagination (Running Away With Me) - R...  \n",
       "642  6hLpp90qMxG3TMvMzwJsiQ                            Some Girls - Remastered  \n",
       "643  3WqR7lRoHEvG0ExkAqBkPj                                  Lies - Remastered  \n",
       "644  06PEXSCNl8Xwf2633TdNnx                         Far Away Eyes - Remastered  \n",
       "645  0Za26pWVLQpKfXmb9FX10S                           Respectable - Remastered  \n",
       "646  6295nz7PVXm49Ihqwm39Ew               Before They Make Me Run - Remastered  \n",
       "647  0832Tptls5YicHPGgw7ssP                       Beast Of Burden - Remastered  \n",
       "648  6yq33zsqWCd8cYXQdtAFZ9                             Shattered - Remastered  \n",
       "649  5pTWpY8l7B1XcQnijEFGFj                              Miss You - Remastered  \n",
       "650  4E8qFhiuYAWEYYAsYIf4dW              When The Whip Comes Down - Remastered  \n",
       "651  7sDQlyQACyT7mNHFwwEMI7  Just My Imagination (Running Away With Me) - R...  \n",
       "652  48bJ1sWhJKdB8M43uqi924                            Some Girls - Remastered  \n",
       "653  6362zAWHGgbrQaoeCFZpuO                                  Lies - Remastered  \n",
       "654  4RlD0KvoqPZy5n9Zi76X9l                         Far Away Eyes - Remastered  \n",
       "655  33PXyHrkIHxp6PBVPlQGx7                           Respectable - Remastered  \n",
       "656  7vsPbFinz35mfQO5d6oL0l               Before They Make Me Run - Remastered  \n",
       "657  7pfVe0VrMK5QhTaAYzkuYn                       Beast Of Burden - Remastered  \n",
       "658  2giRM7RrP6utWLAb8jnFFk                             Shattered - Remastered  \n",
       "659  1V25DJ3ghDJs8m58jbVMbf                                           Claudine  \n",
       "660  3rNTjyvxae83nJCLMxoVSW                                           So Young  \n",
       "661  5oAcuuY504M7eDCln5Xq89                         Do You Think I Really Care  \n",
       "662  1ZBnd9Z80QPQ58BaL5OWlP                                   When You're Gone  \n",
       "663  624njB7Ny3mlA46QokEin9                                     No Spare Parts  \n",
       "664  0WpZfMNsNhiEJ8RSLyjElp                                Don't Be A Stranger  \n",
       "665  0Baq94uZKy4pPvnc40xjPX                                      We Had It All  \n",
       "666  4oOU3GgiZblheOI9JUmM1f                                 Tallahassee Lassie  \n",
       "667  4LW3JaAze7gF8DpPBb2zzl                                I Love You Too Much  \n",
       "668  4LSyTg4sm3N99Pcckw9zjf                                      Keep Up Blues  \n",
       "669  3u06WsJ1KtvEqmmmZqy76J                                      You Win Again  \n",
       "670  7DgRvvPcJlxks2lNpudsuT                                       Petrol Blues  \n",
       "\n",
       "[671 rows x 5 columns]"
      ]
     },
     "execution_count": 24,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pd.DataFrame([{'album_id': a['id'], \n",
    "              'album_name': a['name'],\n",
    "              'track_id': t['id'],\n",
    "              'track_name': t['name'],\n",
    "              'artist_name': t['artist_name']}\n",
    "              for a in albums.find()\n",
    "              for tid in a['tracks']['items']\n",
    "              for t in tracks.find({'_id': tid['id']})])"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Get full track data<a name=\"fulltrackdata\"></a>\n",
    "The full audio analysis requires an API token to get the data. We use the client token to retreive an authorisation token, which will last for about ten minutes.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "def get_spotify_auth_token():\n",
    "    auth_url = 'https://accounts.spotify.com/api/token'\n",
    "    auth_data = urllib.parse.urlencode({'grant_type': 'client_credentials'}).encode('utf-8')\n",
    "    auth_id = base64.standard_b64encode((config['spotify']['client_id'] + \\\n",
    "        ':' + config['spotify']['client_secret']).encode('utf-8')).decode('utf-8)')\n",
    "    auth_headers = {'Authorization': 'Basic ' + auth_id}\n",
    "    auth_request = urllib.request.Request(auth_url, data=auth_data, headers=auth_headers)\n",
    "    with urllib.request.urlopen(auth_request) as f:\n",
    "        response = json.loads(f.read().decode('utf-8'))\n",
    "        return response['token_type'], response['access_token']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "def get_audio_features(track_ids, auth_type, auth_token):\n",
    "    url = 'https://api.spotify.com/v1/audio-features?ids={ids}'.format(ids=','.join(track_ids))\n",
    "    headers = {'Authorization': auth_type + ' ' + auth_token}\n",
    "    request = urllib.request.Request(url, headers=headers, method='GET')\n",
    "    with urllib.request.urlopen(request) as f:\n",
    "        response = json.loads(f.read().decode('utf-8'))\n",
    "        for track in response['audio_features']:\n",
    "            tracks.update_one({'_id': track['id']}, {'$set': track})"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "a_type, a_token = get_spotify_auth_token()\n",
    "for a in albums.find({}, []):\n",
    "    track_ids = [t['_id'] for t in tracks.find({'album.id': a['_id']}, [])]\n",
    "    get_audio_features(track_ids, a_type, a_token)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
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       "    </tr>\n",
       "    <tr>\n",
       "      <th>acousticness</th>\n",
       "      <td>0.425</td>\n",
       "      <td>0.368</td>\n",
       "      <td>0.614</td>\n",
       "      <td>7.67e-05</td>\n",
       "      <td>0.00675</td>\n",
       "      <td>0.0131</td>\n",
       "      <td>0.00327</td>\n",
       "      <td>0.00865</td>\n",
       "      <td>0.0836</td>\n",
       "      <td>0.00242</td>\n",
       "      <td>...</td>\n",
       "      <td>0.607</td>\n",
       "      <td>0.767</td>\n",
       "      <td>0.334</td>\n",
       "      <td>0.386</td>\n",
       "      <td>0.389</td>\n",
       "      <td>0.778</td>\n",
       "      <td>0.608</td>\n",
       "      <td>0.698</td>\n",
       "      <td>0.629</td>\n",
       "      <td>0.641</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>album</th>\n",
       "      <td>{'type': 'album', 'name': 'The Beatles (Remast...</td>\n",
       "      <td>{'type': 'album', 'name': 'Magical Mystery Tou...</td>\n",
       "      <td>{'type': 'album', 'name': 'Beatles For Sale (R...</td>\n",
       "      <td>{'type': 'album', 'name': 'Live At The Hollywo...</td>\n",
       "      <td>{'type': 'album', 'name': 'Live At The Hollywo...</td>\n",
       "      <td>{'type': 'album', 'name': 'Live At The Hollywo...</td>\n",
       "      <td>{'type': 'album', 'name': 'Live At The Hollywo...</td>\n",
       "      <td>{'type': 'album', 'name': 'Live At The Hollywo...</td>\n",
       "      <td>{'type': 'album', 'name': 'Live At The Hollywo...</td>\n",
       "      <td>{'type': 'album', 'name': 'Live At The Hollywo...</td>\n",
       "      <td>...</td>\n",
       "      <td>{'type': 'album', 'name': 'Please Please Me (R...</td>\n",
       "      <td>{'type': 'album', 'name': 'Please Please Me (R...</td>\n",
       "      <td>{'type': 'album', 'name': 'Please Please Me (R...</td>\n",
       "      <td>{'type': 'album', 'name': 'Please Please Me (R...</td>\n",
       "      <td>{'type': 'album', 'name': 'Please Please Me (R...</td>\n",
       "      <td>{'type': 'album', 'name': 'Please Please Me (R...</td>\n",
       "      <td>{'type': 'album', 'name': 'Please Please Me (R...</td>\n",
       "      <td>{'type': 'album', 'name': 'Please Please Me (R...</td>\n",
       "      <td>{'type': 'album', 'name': 'Please Please Me (R...</td>\n",
       "      <td>{'type': 'album', 'name': 'Please Please Me (R...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>album_id</th>\n",
       "      <td>03Qh833fEdVT30Pfs93ea6</td>\n",
       "      <td>6P9yO0ukhOx3dvmhGKeYoC</td>\n",
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       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>...</td>\n",
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       "      <td>7gDXyW16byCQOgK965BRzn</td>\n",
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       "      <td>7gDXyW16byCQOgK965BRzn</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>analysis_url</th>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/2ucF...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/2z1p...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/3ckv...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/4edA...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/150E...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/1fVe...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/0GRp...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/1eVy...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/2p5a...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/1HyL...</td>\n",
       "      <td>...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/43fe...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/3NwE...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/2Icc...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/2OLM...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/01n2...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/5gnr...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/5FBx...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/6tEw...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/50jq...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/4Z1f...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>artist_id</th>\n",
       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
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       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "      <td>...</td>\n",
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       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "      <td>3WrFJ7ztbogyGnTHbHJFl2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>artist_name</th>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>...</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>artists</th>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "      <td>[{'name': 'The Beatles', 'type': 'artist', 'hr...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>available_markets</th>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>complexity</th>\n",
       "      <td>0.0598502</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>0.293946</td>\n",
       "      <td>0.316303</td>\n",
       "      <td>0.445783</td>\n",
       "      <td>0.334303</td>\n",
       "      <td>0.493981</td>\n",
       "      <td>0.24995</td>\n",
       "      <td>0.48621</td>\n",
       "      <td>...</td>\n",
       "      <td>0.445887</td>\n",
       "      <td>0.482092</td>\n",
       "      <td>0.589812</td>\n",
       "      <td>0.377007</td>\n",
       "      <td>0.266738</td>\n",
       "      <td>0.603643</td>\n",
       "      <td>0.355868</td>\n",
       "      <td>0.132842</td>\n",
       "      <td>0.604396</td>\n",
       "      <td>0.470913</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>ctitle</th>\n",
       "      <td>wild honey pie</td>\n",
       "      <td>flying</td>\n",
       "      <td>kansas city heyheyheyhey</td>\n",
       "      <td>twist and shout</td>\n",
       "      <td>shes a woman</td>\n",
       "      <td>dizzy miss lizzy</td>\n",
       "      <td>ticket to ride</td>\n",
       "      <td>cant buy me love</td>\n",
       "      <td>things we said today</td>\n",
       "      <td>roll over beethoven</td>\n",
       "      <td>...</td>\n",
       "      <td>boys</td>\n",
       "      <td>ask me why</td>\n",
       "      <td>please please me</td>\n",
       "      <td>love me do</td>\n",
       "      <td>ps i love you</td>\n",
       "      <td>baby its you</td>\n",
       "      <td>do you want to know a secret</td>\n",
       "      <td>a taste of honey</td>\n",
       "      <td>theres a place</td>\n",
       "      <td>twist and shout</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>danceability</th>\n",
       "      <td>0.792</td>\n",
       "      <td>0.551</td>\n",
       "      <td>0.588</td>\n",
       "      <td>0.311</td>\n",
       "      <td>0.188</td>\n",
       "      <td>0.406</td>\n",
       "      <td>0.39</td>\n",
       "      <td>0.2</td>\n",
       "      <td>0.307</td>\n",
       "      <td>0.204</td>\n",
       "      <td>...</td>\n",
       "      <td>0.402</td>\n",
       "      <td>0.605</td>\n",
       "      <td>0.527</td>\n",
       "      <td>0.52</td>\n",
       "      <td>0.635</td>\n",
       "      <td>0.608</td>\n",
       "      <td>0.673</td>\n",
       "      <td>0.42</td>\n",
       "      <td>0.455</td>\n",
       "      <td>0.482</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>disc_number</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>...</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>duration_ms</th>\n",
       "      <td>52973</td>\n",
       "      <td>135520</td>\n",
       "      <td>158147</td>\n",
       "      <td>93507</td>\n",
       "      <td>192053</td>\n",
       "      <td>219733</td>\n",
       "      <td>146240</td>\n",
       "      <td>134867</td>\n",
       "      <td>138733</td>\n",
       "      <td>134013</td>\n",
       "      <td>...</td>\n",
       "      <td>146440</td>\n",
       "      <td>146533</td>\n",
       "      <td>120853</td>\n",
       "      <td>141693</td>\n",
       "      <td>124360</td>\n",
       "      <td>160520</td>\n",
       "      <td>117013</td>\n",
       "      <td>123480</td>\n",
       "      <td>110493</td>\n",
       "      <td>155227</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>energy</th>\n",
       "      <td>0.763</td>\n",
       "      <td>0.395</td>\n",
       "      <td>0.724</td>\n",
       "      <td>0.822</td>\n",
       "      <td>0.885</td>\n",
       "      <td>0.867</td>\n",
       "      <td>0.779</td>\n",
       "      <td>0.849</td>\n",
       "      <td>0.637</td>\n",
       "      <td>0.808</td>\n",
       "      <td>...</td>\n",
       "      <td>0.86</td>\n",
       "      <td>0.394</td>\n",
       "      <td>0.48</td>\n",
       "      <td>0.829</td>\n",
       "      <td>0.656</td>\n",
       "      <td>0.494</td>\n",
       "      <td>0.349</td>\n",
       "      <td>0.372</td>\n",
       "      <td>0.582</td>\n",
       "      <td>0.849</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>explicit</th>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>...</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>external_ids</th>\n",
       "      <td>{'isrc': 'GBAYE0601648'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601635'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601457'}</td>\n",
       "      <td>{'isrc': 'GBUM71603960'}</td>\n",
       "      <td>{'isrc': 'GBUM71603957'}</td>\n",
       "      <td>{'isrc': 'GBUM71603952'}</td>\n",
       "      <td>{'isrc': 'GBUM71603959'}</td>\n",
       "      <td>{'isrc': 'GBUM71603951'}</td>\n",
       "      <td>{'isrc': 'GBUM71603958'}</td>\n",
       "      <td>{'isrc': 'GBUM71603955'}</td>\n",
       "      <td>...</td>\n",
       "      <td>{'isrc': 'GBAYE0601414'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601415'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601416'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601417'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601418'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601419'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601420'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601421'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601422'}</td>\n",
       "      <td>{'isrc': 'GBAYE0601423'}</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>external_urls</th>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/2u...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/2z...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/3c...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/4e...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/15...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/1f...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/0G...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/1e...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/2p...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/1H...</td>\n",
       "      <td>...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/43...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/3N...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/2I...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/2O...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/01...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/5g...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/5F...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/6t...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/50...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/4Z...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>gloom</th>\n",
       "      <td>0.417113</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>0.249954</td>\n",
       "      <td>0.230078</td>\n",
       "      <td>0.165566</td>\n",
       "      <td>0.371771</td>\n",
       "      <td>0.268628</td>\n",
       "      <td>0.308627</td>\n",
       "      <td>0.26165</td>\n",
       "      <td>...</td>\n",
       "      <td>0.141586</td>\n",
       "      <td>0.264411</td>\n",
       "      <td>0.288445</td>\n",
       "      <td>0.150082</td>\n",
       "      <td>0.135398</td>\n",
       "      <td>0.183832</td>\n",
       "      <td>0.221199</td>\n",
       "      <td>0.278706</td>\n",
       "      <td>0.121155</td>\n",
       "      <td>0.159095</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>href</th>\n",
       "      <td>https://api.spotify.com/v1/tracks/2ucFulEWapRA...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2z1p43SNSbeo...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/3ckvsHnEffhh...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/4edArG2VehvJ...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/150EAeMGWJRu...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/1fVeHYkyMxrj...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/0GRplBEB2FWC...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/1eVymk74iroq...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2p5a9gu6NECV...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/1HyLh5cctOnP...</td>\n",
       "      <td>...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/43feVCF6QfqI...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/3NwEPV9MDr1z...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2Iccm3cKBQHW...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2OLMjGIhCNI6...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/01n20rdBC5cz...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/5gnrZoSS7nbD...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/5FBxWhG0nbBA...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6tEwCsVtZ5tI...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/50jq8RgbDfmN...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/4Z1fbYp0HuxL...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>id</th>\n",
       "      <td>2ucFulEWapRAmTn7l6f5Q7</td>\n",
       "      <td>2z1p43SNSbeowzy8WdYHNk</td>\n",
       "      <td>3ckvsHnEffhhS5c0Cs6Gv5</td>\n",
       "      <td>4edArG2VehvJdwOZfYOxtK</td>\n",
       "      <td>150EAeMGWJRubuH8zyx7h8</td>\n",
       "      <td>1fVeHYkyMxrjbjRAD9uWsZ</td>\n",
       "      <td>0GRplBEB2FWCKutwMmS6nY</td>\n",
       "      <td>1eVymk74iroqhsZxm0Vy3g</td>\n",
       "      <td>2p5a9gu6NECVSvBtGSU1vm</td>\n",
       "      <td>1HyLh5cctOnP186CBi8bhm</td>\n",
       "      <td>...</td>\n",
       "      <td>43feVCF6QfqIt9LnLs9BAH</td>\n",
       "      <td>3NwEPV9MDr1z3KcHiAuz9d</td>\n",
       "      <td>2Iccm3cKBQHWt5yk0yX9nh</td>\n",
       "      <td>2OLMjGIhCNI6j34ysPscbp</td>\n",
       "      <td>01n20rdBC5czKAhxmGREkr</td>\n",
       "      <td>5gnrZoSS7nbDYtHp32RFiI</td>\n",
       "      <td>5FBxWhG0nbBAF6lWgJFklM</td>\n",
       "      <td>6tEwCsVtZ5tI8uHNJSHQ3b</td>\n",
       "      <td>50jq8RgbDfmNNd0NiRnl4L</td>\n",
       "      <td>4Z1fbYp0HuxLBje4MOZcSD</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>instrumentalness</th>\n",
       "      <td>0.627</td>\n",
       "      <td>0.88</td>\n",
       "      <td>8.92e-05</td>\n",
       "      <td>2.04e-06</td>\n",
       "      <td>2.42e-05</td>\n",
       "      <td>0.000141</td>\n",
       "      <td>0</td>\n",
       "      <td>0</td>\n",
       "      <td>0</td>\n",
       "      <td>0</td>\n",
       "      <td>...</td>\n",
       "      <td>0</td>\n",
       "      <td>0</td>\n",
       "      <td>0</td>\n",
       "      <td>6.2e-05</td>\n",
       "      <td>0.00127</td>\n",
       "      <td>0</td>\n",
       "      <td>0</td>\n",
       "      <td>0</td>\n",
       "      <td>4.22e-06</td>\n",
       "      <td>7.74e-06</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>key</th>\n",
       "      <td>2</td>\n",
       "      <td>0</td>\n",
       "      <td>7</td>\n",
       "      <td>2</td>\n",
       "      <td>9</td>\n",
       "      <td>11</td>\n",
       "      <td>9</td>\n",
       "      <td>5</td>\n",
       "      <td>5</td>\n",
       "      <td>2</td>\n",
       "      <td>...</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>0</td>\n",
       "      <td>2</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>1</td>\n",
       "      <td>4</td>\n",
       "      <td>2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>liveness</th>\n",
       "      <td>0.789</td>\n",
       "      <td>0.0932</td>\n",
       "      <td>0.877</td>\n",
       "      <td>0.508</td>\n",
       "      <td>0.85</td>\n",
       "      <td>0.496</td>\n",
       "      <td>0.366</td>\n",
       "      <td>0.894</td>\n",
       "      <td>0.756</td>\n",
       "      <td>0.634</td>\n",
       "      <td>...</td>\n",
       "      <td>0.736</td>\n",
       "      <td>0.0967</td>\n",
       "      <td>0.0702</td>\n",
       "      <td>0.227</td>\n",
       "      <td>0.0828</td>\n",
       "      <td>0.0926</td>\n",
       "      <td>0.38</td>\n",
       "      <td>0.104</td>\n",
       "      <td>0.172</td>\n",
       "      <td>0.0414</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>loudness</th>\n",
       "      <td>-11.185</td>\n",
       "      <td>-14.755</td>\n",
       "      <td>-6.63</td>\n",
       "      <td>-8.696</td>\n",
       "      <td>-8.189</td>\n",
       "      <td>-6.879</td>\n",
       "      <td>-8.007</td>\n",
       "      <td>-7.606</td>\n",
       "      <td>-8.35</td>\n",
       "      <td>-7.948</td>\n",
       "      <td>...</td>\n",
       "      <td>-10.31</td>\n",
       "      <td>-11.33</td>\n",
       "      <td>-9.61</td>\n",
       "      <td>-6.228</td>\n",
       "      <td>-8.5</td>\n",
       "      <td>-12.211</td>\n",
       "      <td>-12.414</td>\n",
       "      <td>-11.416</td>\n",
       "      <td>-10.009</td>\n",
       "      <td>-9.198</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>lyrical_density</th>\n",
       "      <td>0.169898</td>\n",
       "      <td>0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2.82332</td>\n",
       "      <td>0.577965</td>\n",
       "      <td>0.796421</td>\n",
       "      <td>1.85312</td>\n",
       "      <td>1.47553</td>\n",
       "      <td>1.29746</td>\n",
       "      <td>1.81326</td>\n",
       "      <td>...</td>\n",
       "      <td>0.901393</td>\n",
       "      <td>1.01001</td>\n",
       "      <td>1.53079</td>\n",
       "      <td>0.783384</td>\n",
       "      <td>1.2303</td>\n",
       "      <td>1.32694</td>\n",
       "      <td>1.1879</td>\n",
       "      <td>0.74506</td>\n",
       "      <td>0.895984</td>\n",
       "      <td>1.70074</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>lyrics</th>\n",
       "      <td>honey pie honey pie i love you, honey pie</td>\n",
       "      <td></td>\n",
       "      <td>NaN</td>\n",
       "      <td>well shake it up baby now (shake it up baby) t...</td>\n",
       "      <td>my love don't give me presents i know that she...</td>\n",
       "      <td>{intro} you make me dizzy, miss lizzy the way ...</td>\n",
       "      <td>i think i'm going to be sad i think it's today...</td>\n",
       "      <td>can't buy me love, love can't buy me love i'll...</td>\n",
       "      <td>you say you will love me if i have to go you'l...</td>\n",
       "      <td>well going to write a little letter going to m...</td>\n",
       "      <td>...</td>\n",
       "      <td>i been told when a boy kiss a girl take a trip...</td>\n",
       "      <td>i love you, because you tell me things i want ...</td>\n",
       "      <td>last night i said these words to my girl i kno...</td>\n",
       "      <td>love, love me do you know i love you i'll alwa...</td>\n",
       "      <td>as i write this letter send my love to you rem...</td>\n",
       "      <td>sha la la la la la la la sha la la la la la la...</td>\n",
       "      <td>you'll never know how much i really love you y...</td>\n",
       "      <td>a taste of honey! tasting much sweeter than wi...</td>\n",
       "      <td>there is a place where i can go when i feel lo...</td>\n",
       "      <td>well shake it up baby now (shake it up baby) t...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>mode</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>0</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>...</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>0</td>\n",
       "      <td>1</td>\n",
       "      <td>0</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>name</th>\n",
       "      <td>Wild Honey Pie - Remastered 2009</td>\n",
       "      <td>Flying - Remastered 2009</td>\n",
       "      <td>Kansas City / Hey-Hey-Hey-Hey - Remastered 2009</td>\n",
       "      <td>Twist And Shout - Live / Remastered</td>\n",
       "      <td>She's A Woman - Live / Remastered</td>\n",
       "      <td>Dizzy Miss Lizzy - Live / Remastered</td>\n",
       "      <td>Ticket To Ride - Live / Remastered</td>\n",
       "      <td>Can't Buy Me Love - Live / Remastered</td>\n",
       "      <td>Things We Said Today - Live / Remastered</td>\n",
       "      <td>Roll Over Beethoven - Live / Remastered</td>\n",
       "      <td>...</td>\n",
       "      <td>Boys - Remastered 2009</td>\n",
       "      <td>Ask Me Why - Remastered 2009</td>\n",
       "      <td>Please Please Me - Remastered 2009</td>\n",
       "      <td>Love Me Do - Remastered 2009</td>\n",
       "      <td>P.S. I Love You - Remastered 2009</td>\n",
       "      <td>Baby It's You - Remastered 2009</td>\n",
       "      <td>Do You Want To Know A Secret - Remastered 2009</td>\n",
       "      <td>A Taste Of Honey - Remastered 2009</td>\n",
       "      <td>There's A Place - Remastered 2009</td>\n",
       "      <td>Twist And Shout - Remastered 2009</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>original_lyrics</th>\n",
       "      <td>\\n\\nHoney Pie\\nHoney Pie\\nI love you, Honey Pi...</td>\n",
       "      <td>\\n\\n[Instrumental]\\n\\n</td>\n",
       "      <td>NaN</td>\n",
       "      <td>\\n\\n[Verse 1]\\nWell shake it up baby now (shak...</td>\n",
       "      <td>\\n\\n[Chorus]\\nMy love don't give me presents\\n...</td>\n",
       "      <td>\\n\\n{Intro}\\n\\nYou make me dizzy, Miss Lizzy\\n...</td>\n",
       "      <td>\\n\\n[Verse 1]\\nI think I'm going to be sad\\nI ...</td>\n",
       "      <td>\\n\\n[Chorus 1]\\nCan't buy me love, love\\nCan't...</td>\n",
       "      <td>\\n\\n[Verse 1]\\nYou say you will love me\\nIf I ...</td>\n",
       "      <td>\\n\\n[Verse 1]\\nWell going to write a little le...</td>\n",
       "      <td>...</td>\n",
       "      <td>\\n\\n[Verse 1]\\nI been told when a boy kiss a g...</td>\n",
       "      <td>\\n\\n[Verse 1]\\nI love you, because you tell me...</td>\n",
       "      <td>\\n\\n[Verse 1]\\nLast night I said these words t...</td>\n",
       "      <td>\\n\\nLove, love me do\\nYou know I love you\\nI'l...</td>\n",
       "      <td>\\n\\nAs I write this letter\\nSend my love to yo...</td>\n",
       "      <td>\\n\\n[Intro-The Beatles]\\nSha la la la la la la...</td>\n",
       "      <td>\\n\\n[Intro]\\nYou'll never know how much I real...</td>\n",
       "      <td>\\n\\n[Intro]\\nA taste of honey! Tasting much sw...</td>\n",
       "      <td>\\n\\n[Verse 1]\\nThere is a place\\nWhere I can g...</td>\n",
       "      <td>\\n\\n[Verse 1]\\nWell shake it up baby now (shak...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>popularity</th>\n",
       "      <td>41</td>\n",
       "      <td>43</td>\n",
       "      <td>37</td>\n",
       "      <td>47</td>\n",
       "      <td>43</td>\n",
       "      <td>42</td>\n",
       "      <td>43</td>\n",
       "      <td>43</td>\n",
       "      <td>42</td>\n",
       "      <td>41</td>\n",
       "      <td>...</td>\n",
       "      <td>41</td>\n",
       "      <td>40</td>\n",
       "      <td>46</td>\n",
       "      <td>53</td>\n",
       "      <td>41</td>\n",
       "      <td>42</td>\n",
       "      <td>47</td>\n",
       "      <td>39</td>\n",
       "      <td>41</td>\n",
       "      <td>63</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>preview_url</th>\n",
       "      <td>https://p.scdn.co/mp3-preview/ddebab4d5e87d46a...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/15f07b753cb7e50c...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/bd13930c7706bdd4...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/cd82d2f8f92a7222...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/37806a7d82c5d2a8...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/5ee6d20e1808908e...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/558bb39228550744...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/c6b9c820e62868db...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/7b71156485b9e3e1...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/318950f70347c556...</td>\n",
       "      <td>...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/c84bcc2dd65c3d9b...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/f42256fa5367c68f...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/c7974d03d8cd26de...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/c0c7944dcb9d2457...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/5ef1f2ba07489648...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/d7eeb1f68c39066d...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/5bd705943290818c...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/dd94439cdf6e7668...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/5260a1d4f12c23ac...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/b7e3bc96b46e4dcc...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>sentiment</th>\n",
       "      <td>{'label': 'pos', 'probability': {'neutral': 0....</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>{'label': 'pos', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'neutral', 'probability': {'neutral'...</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>...</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'pos', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'pos', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'pos', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'neg', 'probability': {'neutral': 0....</td>\n",
       "      <td>{'label': 'pos', 'probability': {'neutral': 0....</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>speechiness</th>\n",
       "      <td>0.0506</td>\n",
       "      <td>0.0501</td>\n",
       "      <td>0.0335</td>\n",
       "      <td>0.0395</td>\n",
       "      <td>0.0662</td>\n",
       "      <td>0.0461</td>\n",
       "      <td>0.0423</td>\n",
       "      <td>0.0571</td>\n",
       "      <td>0.0392</td>\n",
       "      <td>0.0398</td>\n",
       "      <td>...</td>\n",
       "      <td>0.0504</td>\n",
       "      <td>0.0378</td>\n",
       "      <td>0.028</td>\n",
       "      <td>0.0806</td>\n",
       "      <td>0.0291</td>\n",
       "      <td>0.0345</td>\n",
       "      <td>0.0368</td>\n",
       "      <td>0.0327</td>\n",
       "      <td>0.0292</td>\n",
       "      <td>0.0452</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>tempo</th>\n",
       "      <td>89.9</td>\n",
       "      <td>92.929</td>\n",
       "      <td>131.36</td>\n",
       "      <td>126.441</td>\n",
       "      <td>175.86</td>\n",
       "      <td>129.417</td>\n",
       "      <td>121.216</td>\n",
       "      <td>173.283</td>\n",
       "      <td>146.636</td>\n",
       "      <td>179.24</td>\n",
       "      <td>...</td>\n",
       "      <td>142.445</td>\n",
       "      <td>133.942</td>\n",
       "      <td>139.388</td>\n",
       "      <td>147.997</td>\n",
       "      <td>134.435</td>\n",
       "      <td>112.421</td>\n",
       "      <td>124.451</td>\n",
       "      <td>101.408</td>\n",
       "      <td>140.928</td>\n",
       "      <td>124.631</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>time_signature</th>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>3</td>\n",
       "      <td>...</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>3</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>track_href</th>\n",
       "      <td>https://api.spotify.com/v1/tracks/2ucFulEWapRA...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2z1p43SNSbeo...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/3ckvsHnEffhh...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/4edArG2VehvJ...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/150EAeMGWJRu...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/1fVeHYkyMxrj...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/0GRplBEB2FWC...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/1eVymk74iroq...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2p5a9gu6NECV...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/1HyLh5cctOnP...</td>\n",
       "      <td>...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/43feVCF6QfqI...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/3NwEPV9MDr1z...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2Iccm3cKBQHW...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2OLMjGIhCNI6...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/01n20rdBC5cz...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/5gnrZoSS7nbD...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/5FBxWhG0nbBA...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6tEwCsVtZ5tI...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/50jq8RgbDfmN...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/4Z1fbYp0HuxL...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>track_number</th>\n",
       "      <td>5</td>\n",
       "      <td>3</td>\n",
       "      <td>7</td>\n",
       "      <td>1</td>\n",
       "      <td>2</td>\n",
       "      <td>3</td>\n",
       "      <td>4</td>\n",
       "      <td>5</td>\n",
       "      <td>6</td>\n",
       "      <td>7</td>\n",
       "      <td>...</td>\n",
       "      <td>5</td>\n",
       "      <td>6</td>\n",
       "      <td>7</td>\n",
       "      <td>8</td>\n",
       "      <td>9</td>\n",
       "      <td>10</td>\n",
       "      <td>11</td>\n",
       "      <td>12</td>\n",
       "      <td>13</td>\n",
       "      <td>14</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>type</th>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>...</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>uri</th>\n",
       "      <td>spotify:track:2ucFulEWapRAmTn7l6f5Q7</td>\n",
       "      <td>spotify:track:2z1p43SNSbeowzy8WdYHNk</td>\n",
       "      <td>spotify:track:3ckvsHnEffhhS5c0Cs6Gv5</td>\n",
       "      <td>spotify:track:4edArG2VehvJdwOZfYOxtK</td>\n",
       "      <td>spotify:track:150EAeMGWJRubuH8zyx7h8</td>\n",
       "      <td>spotify:track:1fVeHYkyMxrjbjRAD9uWsZ</td>\n",
       "      <td>spotify:track:0GRplBEB2FWCKutwMmS6nY</td>\n",
       "      <td>spotify:track:1eVymk74iroqhsZxm0Vy3g</td>\n",
       "      <td>spotify:track:2p5a9gu6NECVSvBtGSU1vm</td>\n",
       "      <td>spotify:track:1HyLh5cctOnP186CBi8bhm</td>\n",
       "      <td>...</td>\n",
       "      <td>spotify:track:43feVCF6QfqIt9LnLs9BAH</td>\n",
       "      <td>spotify:track:3NwEPV9MDr1z3KcHiAuz9d</td>\n",
       "      <td>spotify:track:2Iccm3cKBQHWt5yk0yX9nh</td>\n",
       "      <td>spotify:track:2OLMjGIhCNI6j34ysPscbp</td>\n",
       "      <td>spotify:track:01n20rdBC5czKAhxmGREkr</td>\n",
       "      <td>spotify:track:5gnrZoSS7nbDYtHp32RFiI</td>\n",
       "      <td>spotify:track:5FBxWhG0nbBAF6lWgJFklM</td>\n",
       "      <td>spotify:track:6tEwCsVtZ5tI8uHNJSHQ3b</td>\n",
       "      <td>spotify:track:50jq8RgbDfmNNd0NiRnl4L</td>\n",
       "      <td>spotify:track:4Z1fbYp0HuxLBje4MOZcSD</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>valence</th>\n",
       "      <td>0.153</td>\n",
       "      <td>0.246</td>\n",
       "      <td>0.929</td>\n",
       "      <td>0.588</td>\n",
       "      <td>0.562</td>\n",
       "      <td>0.758</td>\n",
       "      <td>0.405</td>\n",
       "      <td>0.669</td>\n",
       "      <td>0.395</td>\n",
       "      <td>0.726</td>\n",
       "      <td>...</td>\n",
       "      <td>0.825</td>\n",
       "      <td>0.606</td>\n",
       "      <td>0.708</td>\n",
       "      <td>0.765</td>\n",
       "      <td>0.78</td>\n",
       "      <td>0.889</td>\n",
       "      <td>0.636</td>\n",
       "      <td>0.378</td>\n",
       "      <td>0.928</td>\n",
       "      <td>0.942</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>41 rows × 230 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                                 0    \\\n",
       "_id                                           2ucFulEWapRAmTn7l6f5Q7   \n",
       "acousticness                                                   0.425   \n",
       "album              {'type': 'album', 'name': 'The Beatles (Remast...   \n",
       "album_id                                      03Qh833fEdVT30Pfs93ea6   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/2ucF...   \n",
       "artist_id                                     3WrFJ7ztbogyGnTHbHJFl2   \n",
       "artist_name                                              The Beatles   \n",
       "artists            [{'name': 'The Beatles', 'type': 'artist', 'hr...   \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "complexity                                                 0.0598502   \n",
       "ctitle                                                wild honey pie   \n",
       "danceability                                                   0.792   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                    52973   \n",
       "energy                                                         0.763   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBAYE0601648'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/2u...   \n",
       "gloom                                                       0.417113   \n",
       "href               https://api.spotify.com/v1/tracks/2ucFulEWapRA...   \n",
       "id                                            2ucFulEWapRAmTn7l6f5Q7   \n",
       "instrumentalness                                               0.627   \n",
       "key                                                                2   \n",
       "liveness                                                       0.789   \n",
       "loudness                                                     -11.185   \n",
       "lyrical_density                                             0.169898   \n",
       "lyrics                     honey pie honey pie i love you, honey pie   \n",
       "mode                                                               1   \n",
       "name                                Wild Honey Pie - Remastered 2009   \n",
       "original_lyrics    \\n\\nHoney Pie\\nHoney Pie\\nI love you, Honey Pi...   \n",
       "popularity                                                        41   \n",
       "preview_url        https://p.scdn.co/mp3-preview/ddebab4d5e87d46a...   \n",
       "sentiment          {'label': 'pos', 'probability': {'neutral': 0....   \n",
       "speechiness                                                   0.0506   \n",
       "tempo                                                           89.9   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/2ucFulEWapRA...   \n",
       "track_number                                                       5   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:2ucFulEWapRAmTn7l6f5Q7   \n",
       "valence                                                        0.153   \n",
       "\n",
       "                                                                 1    \\\n",
       "_id                                           2z1p43SNSbeowzy8WdYHNk   \n",
       "acousticness                                                   0.368   \n",
       "album              {'type': 'album', 'name': 'Magical Mystery Tou...   \n",
       "album_id                                      6P9yO0ukhOx3dvmhGKeYoC   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/2z1p...   \n",
       "artist_id                                     3WrFJ7ztbogyGnTHbHJFl2   \n",
       "artist_name                                              The Beatles   \n",
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       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "complexity                                                       NaN   \n",
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       "disc_number                                                        1   \n",
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       "external_urls      {'spotify': 'https://open.spotify.com/track/2z...   \n",
       "gloom                                                            NaN   \n",
       "href               https://api.spotify.com/v1/tracks/2z1p43SNSbeo...   \n",
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       "lyrics                                                                 \n",
       "mode                                                               1   \n",
       "name                                        Flying - Remastered 2009   \n",
       "original_lyrics                               \\n\\n[Instrumental]\\n\\n   \n",
       "popularity                                                        43   \n",
       "preview_url        https://p.scdn.co/mp3-preview/15f07b753cb7e50c...   \n",
       "sentiment                                                        NaN   \n",
       "speechiness                                                   0.0501   \n",
       "tempo                                                         92.929   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/2z1p43SNSbeo...   \n",
       "track_number                                                       3   \n",
       "type                                                  audio_features   \n",
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       "\n",
       "                                                                 2    \\\n",
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       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "complexity                                                       NaN   \n",
       "ctitle                                      kansas city heyheyheyhey   \n",
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       "disc_number                                                        1   \n",
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       "external_ids                                {'isrc': 'GBAYE0601457'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/3c...   \n",
       "gloom                                                            NaN   \n",
       "href               https://api.spotify.com/v1/tracks/3ckvsHnEffhh...   \n",
       "id                                            3ckvsHnEffhhS5c0Cs6Gv5   \n",
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       "key                                                                7   \n",
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       "lyrical_density                                                  NaN   \n",
       "lyrics                                                           NaN   \n",
       "mode                                                               1   \n",
       "name                 Kansas City / Hey-Hey-Hey-Hey - Remastered 2009   \n",
       "original_lyrics                                                  NaN   \n",
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       "preview_url        https://p.scdn.co/mp3-preview/bd13930c7706bdd4...   \n",
       "sentiment                                                        NaN   \n",
       "speechiness                                                   0.0335   \n",
       "tempo                                                         131.36   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/3ckvsHnEffhh...   \n",
       "track_number                                                       7   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:3ckvsHnEffhhS5c0Cs6Gv5   \n",
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       "\n",
       "                                                                 3    \\\n",
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       "acousticness                                                7.67e-05   \n",
       "album              {'type': 'album', 'name': 'Live At The Hollywo...   \n",
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       "disc_number                                                        1   \n",
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       "explicit                                                       False   \n",
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       "external_urls      {'spotify': 'https://open.spotify.com/track/4e...   \n",
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       "href               https://api.spotify.com/v1/tracks/4edArG2VehvJ...   \n",
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       "mode                                                               1   \n",
       "name                             Twist And Shout - Live / Remastered   \n",
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       "popularity                                                        47   \n",
       "preview_url        https://p.scdn.co/mp3-preview/cd82d2f8f92a7222...   \n",
       "sentiment          {'label': 'pos', 'probability': {'neutral': 0....   \n",
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       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/4edArG2VehvJ...   \n",
       "track_number                                                       1   \n",
       "type                                                  audio_features   \n",
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       "\n",
       "                                                                 4    \\\n",
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       "album              {'type': 'album', 'name': 'Live At The Hollywo...   \n",
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       "complexity                                                  0.316303   \n",
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       "disc_number                                                        1   \n",
       "duration_ms                                                   192053   \n",
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       "explicit                                                       False   \n",
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       "mode                                                               1   \n",
       "name                               She's A Woman - Live / Remastered   \n",
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       "popularity                                                        43   \n",
       "preview_url        https://p.scdn.co/mp3-preview/37806a7d82c5d2a8...   \n",
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       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/150EAeMGWJRu...   \n",
       "track_number                                                       2   \n",
       "type                                                  audio_features   \n",
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       "\n",
       "                                                                 5    \\\n",
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       "disc_number                                                        1   \n",
       "duration_ms                                                   219733   \n",
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       "mode                                                               0   \n",
       "name                            Dizzy Miss Lizzy - Live / Remastered   \n",
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       "popularity                                                        42   \n",
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       "track_href         https://api.spotify.com/v1/tracks/1fVeHYkyMxrj...   \n",
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       "type                                                  audio_features   \n",
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       "\n",
       "                                                                 6    \\\n",
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       "mode                                                               1   \n",
       "name                              Ticket To Ride - Live / Remastered   \n",
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       "popularity                                                        43   \n",
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       "\n",
       "                                                                 7    \\\n",
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       "disc_number                                                        1   \n",
       "duration_ms                                                   134867   \n",
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       "mode                                                               1   \n",
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       "popularity                                                        43   \n",
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       "\n",
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       "complexity                                                   0.24995   \n",
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       "disc_number                                                        1   \n",
       "duration_ms                                                   138733   \n",
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       "mode                                                               1   \n",
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       "popularity                                                        42   \n",
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       "\n",
       "                                                                 9    \\\n",
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       "danceability                                                   0.204   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   134013   \n",
       "energy                                                         0.808   \n",
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       "mode                                                               1   \n",
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       "popularity                                                        41   \n",
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       "valence                                                        0.726   \n",
       "\n",
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       "album                                    ...                           \n",
       "album_id                                 ...                           \n",
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       "\n",
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       "\n",
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       "mode                                                               1   \n",
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       "\n",
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       "\n",
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       "\n",
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       "explicit                                                       False   \n",
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       "mode                                                               1   \n",
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       "popularity                                                        47   \n",
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       "\n",
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       "danceability                                                    0.42   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   123480   \n",
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       "mode                                                               0   \n",
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       "popularity                                                        39   \n",
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       "track_number                                                      12   \n",
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       "\n",
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       "complexity                                                  0.604396   \n",
       "ctitle                                                theres a place   \n",
       "danceability                                                   0.455   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   110493   \n",
       "energy                                                         0.582   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBAYE0601422'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/50...   \n",
       "gloom                                                       0.121155   \n",
       "href               https://api.spotify.com/v1/tracks/50jq8RgbDfmN...   \n",
       "id                                            50jq8RgbDfmNNd0NiRnl4L   \n",
       "instrumentalness                                            4.22e-06   \n",
       "key                                                                4   \n",
       "liveness                                                       0.172   \n",
       "loudness                                                     -10.009   \n",
       "lyrical_density                                             0.895984   \n",
       "lyrics             there is a place where i can go when i feel lo...   \n",
       "mode                                                               1   \n",
       "name                               There's A Place - Remastered 2009   \n",
       "original_lyrics    \\n\\n[Verse 1]\\nThere is a place\\nWhere I can g...   \n",
       "popularity                                                        41   \n",
       "preview_url        https://p.scdn.co/mp3-preview/5260a1d4f12c23ac...   \n",
       "sentiment          {'label': 'neg', 'probability': {'neutral': 0....   \n",
       "speechiness                                                   0.0292   \n",
       "tempo                                                        140.928   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/50jq8RgbDfmN...   \n",
       "track_number                                                      13   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:50jq8RgbDfmNNd0NiRnl4L   \n",
       "valence                                                        0.928   \n",
       "\n",
       "                                                                 229  \n",
       "_id                                           4Z1fbYp0HuxLBje4MOZcSD  \n",
       "acousticness                                                   0.641  \n",
       "album              {'type': 'album', 'name': 'Please Please Me (R...  \n",
       "album_id                                      7gDXyW16byCQOgK965BRzn  \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/4Z1f...  \n",
       "artist_id                                     3WrFJ7ztbogyGnTHbHJFl2  \n",
       "artist_name                                              The Beatles  \n",
       "artists            [{'name': 'The Beatles', 'type': 'artist', 'hr...  \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...  \n",
       "complexity                                                  0.470913  \n",
       "ctitle                                               twist and shout  \n",
       "danceability                                                   0.482  \n",
       "disc_number                                                        1  \n",
       "duration_ms                                                   155227  \n",
       "energy                                                         0.849  \n",
       "explicit                                                       False  \n",
       "external_ids                                {'isrc': 'GBAYE0601423'}  \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/4Z...  \n",
       "gloom                                                       0.159095  \n",
       "href               https://api.spotify.com/v1/tracks/4Z1fbYp0HuxL...  \n",
       "id                                            4Z1fbYp0HuxLBje4MOZcSD  \n",
       "instrumentalness                                            7.74e-06  \n",
       "key                                                                2  \n",
       "liveness                                                      0.0414  \n",
       "loudness                                                      -9.198  \n",
       "lyrical_density                                              1.70074  \n",
       "lyrics             well shake it up baby now (shake it up baby) t...  \n",
       "mode                                                               1  \n",
       "name                               Twist And Shout - Remastered 2009  \n",
       "original_lyrics    \\n\\n[Verse 1]\\nWell shake it up baby now (shak...  \n",
       "popularity                                                        63  \n",
       "preview_url        https://p.scdn.co/mp3-preview/b7e3bc96b46e4dcc...  \n",
       "sentiment          {'label': 'pos', 'probability': {'neutral': 0....  \n",
       "speechiness                                                   0.0452  \n",
       "tempo                                                        124.631  \n",
       "time_signature                                                     4  \n",
       "track_href         https://api.spotify.com/v1/tracks/4Z1fbYp0HuxL...  \n",
       "track_number                                                      14  \n",
       "type                                                  audio_features  \n",
       "uri                             spotify:track:4Z1fbYp0HuxLBje4MOZcSD  \n",
       "valence                                                        0.942  \n",
       "\n",
       "[41 rows x 230 columns]"
      ]
     },
     "execution_count": 31,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "beatles_tracks = pd.DataFrame(list(tracks.find({'artist_id': beatles_id})))\n",
    "beatles_tracks.T"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
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       "    <tr style=\"text-align: right;\">\n",
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       "      <th>acousticness</th>\n",
       "      <td>0.129</td>\n",
       "      <td>0.424</td>\n",
       "      <td>0.413</td>\n",
       "      <td>0.46</td>\n",
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       "      <td>0.002</td>\n",
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       "    <tr>\n",
       "      <th>album</th>\n",
       "      <td>{'name': 'Some Girls', 'type': 'album', 'artis...</td>\n",
       "      <td>{'name': 'Some Girls', 'type': 'album', 'artis...</td>\n",
       "      <td>{'name': 'Some Girls', 'type': 'album', 'artis...</td>\n",
       "      <td>{'name': 'Some Girls', 'type': 'album', 'artis...</td>\n",
       "      <td>{'name': 'Some Girls (Deluxe Version)', 'type'...</td>\n",
       "      <td>{'name': 'Some Girls (Deluxe Version)', 'type'...</td>\n",
       "      <td>{'name': 'Some Girls (Deluxe Version)', 'type'...</td>\n",
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       "      <td>{'name': 'Some Girls (Deluxe Version)', 'type'...</td>\n",
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       "      <td>...</td>\n",
       "      <td>{'name': 'Live 1965: Music From Charlie Is My ...</td>\n",
       "      <td>{'name': 'Live 1965: Music From Charlie Is My ...</td>\n",
       "      <td>{'name': 'Live 1965: Music From Charlie Is My ...</td>\n",
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       "      <td>{'name': 'Live 1965: Music From Charlie Is My ...</td>\n",
       "      <td>{'name': 'Live 1965: Music From Charlie Is My ...</td>\n",
       "      <td>{'name': 'Live 1965: Music From Charlie Is My ...</td>\n",
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       "      <td>{'name': 'Live 1965: Music From Charlie Is My ...</td>\n",
       "      <td>{'name': 'Live 1965: Music From Charlie Is My ...</td>\n",
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       "      <td>5eTqRwTGKPBUiUuN1rFaXD</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>analysis_url</th>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/0Za2...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/6295...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/0832...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/6yq3...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/5pTW...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/4E8q...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/7sDQ...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/48bJ...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/6362...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/4RlD...</td>\n",
       "      <td>...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/5pR8...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/6vZf...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/6hxg...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/2BxO...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/6L7t...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/1n2p...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/2gB5...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/6C0a...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/1NvB...</td>\n",
       "      <td>https://api.spotify.com/v1/audio-analysis/31Ku...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>artist_id</th>\n",
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       "      <td>22bE4uQ6baNwSHPVcDxLCe</td>\n",
       "      <td>22bE4uQ6baNwSHPVcDxLCe</td>\n",
       "      <td>22bE4uQ6baNwSHPVcDxLCe</td>\n",
       "      <td>22bE4uQ6baNwSHPVcDxLCe</td>\n",
       "      <td>22bE4uQ6baNwSHPVcDxLCe</td>\n",
       "      <td>22bE4uQ6baNwSHPVcDxLCe</td>\n",
       "      <td>22bE4uQ6baNwSHPVcDxLCe</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>artist_name</th>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>...</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "      <td>The Rolling Stones</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>artists</th>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "      <td>[{'name': 'The Rolling Stones', 'type': 'artis...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>available_markets</th>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BG, BO, BR, CL, CO, CR, CY, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BG, BO, BR, CL, CO, CR, CY, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BG, BO, BR, CL, CO, CR, CY, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BG, BO, BR, CL, CO, CR, CY, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BG, BO, BR, CL, CO, CR, CY, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BG, BO, BR, CL, CO, CR, CY, C...</td>\n",
       "      <td>...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "      <td>[AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>danceability</th>\n",
       "      <td>0.456</td>\n",
       "      <td>0.598</td>\n",
       "      <td>0.786</td>\n",
       "      <td>0.737</td>\n",
       "      <td>0.796</td>\n",
       "      <td>0.502</td>\n",
       "      <td>0.449</td>\n",
       "      <td>0.48</td>\n",
       "      <td>0.393</td>\n",
       "      <td>0.66</td>\n",
       "      <td>...</td>\n",
       "      <td>0.183</td>\n",
       "      <td>0.391</td>\n",
       "      <td>0.407</td>\n",
       "      <td>0.46</td>\n",
       "      <td>0.44</td>\n",
       "      <td>0.336</td>\n",
       "      <td>0.438</td>\n",
       "      <td>0.245</td>\n",
       "      <td>0.124</td>\n",
       "      <td>0.213</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>disc_number</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>...</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>duration_ms</th>\n",
       "      <td>187440</td>\n",
       "      <td>204960</td>\n",
       "      <td>265173</td>\n",
       "      <td>226800</td>\n",
       "      <td>288667</td>\n",
       "      <td>260960</td>\n",
       "      <td>278173</td>\n",
       "      <td>276933</td>\n",
       "      <td>191267</td>\n",
       "      <td>263960</td>\n",
       "      <td>...</td>\n",
       "      <td>123507</td>\n",
       "      <td>103147</td>\n",
       "      <td>171267</td>\n",
       "      <td>135040</td>\n",
       "      <td>147040</td>\n",
       "      <td>32947</td>\n",
       "      <td>155600</td>\n",
       "      <td>164320</td>\n",
       "      <td>148560</td>\n",
       "      <td>189600</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>energy</th>\n",
       "      <td>0.992</td>\n",
       "      <td>0.943</td>\n",
       "      <td>0.87</td>\n",
       "      <td>0.943</td>\n",
       "      <td>0.711</td>\n",
       "      <td>0.983</td>\n",
       "      <td>0.91</td>\n",
       "      <td>0.933</td>\n",
       "      <td>0.997</td>\n",
       "      <td>0.611</td>\n",
       "      <td>...</td>\n",
       "      <td>0.913</td>\n",
       "      <td>0.967</td>\n",
       "      <td>0.796</td>\n",
       "      <td>0.976</td>\n",
       "      <td>0.932</td>\n",
       "      <td>0.97</td>\n",
       "      <td>0.912</td>\n",
       "      <td>0.964</td>\n",
       "      <td>0.92</td>\n",
       "      <td>0.929</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>explicit</th>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>True</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>...</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "      <td>False</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>external_ids</th>\n",
       "      <td>{'isrc': 'GBCJN7800007'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800008'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800009'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800010'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800001'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800002'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800003'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800004'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800005'}</td>\n",
       "      <td>{'isrc': 'GBCJN7800006'}</td>\n",
       "      <td>...</td>\n",
       "      <td>{'isrc': 'USA171210002'}</td>\n",
       "      <td>{'isrc': 'USA171210003'}</td>\n",
       "      <td>{'isrc': 'USA171210004'}</td>\n",
       "      <td>{'isrc': 'USA171210005'}</td>\n",
       "      <td>{'isrc': 'USA171210006'}</td>\n",
       "      <td>{'isrc': 'USA171210007'}</td>\n",
       "      <td>{'isrc': 'USA171210008'}</td>\n",
       "      <td>{'isrc': 'USA171210009'}</td>\n",
       "      <td>{'isrc': 'USA171210010'}</td>\n",
       "      <td>{'isrc': 'USA171210011'}</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>external_urls</th>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/0Z...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/62...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/08...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/6y...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/5p...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/4E...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/7s...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/48...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/63...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/4R...</td>\n",
       "      <td>...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/5p...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/6v...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/6h...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/2B...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/6L...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/1n...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/2g...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/6C...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/1N...</td>\n",
       "      <td>{'spotify': 'https://open.spotify.com/track/31...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>href</th>\n",
       "      <td>https://api.spotify.com/v1/tracks/0Za26pWVLQpK...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6295nz7PVXm4...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/0832Tptls5Yi...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6yq33zsqWCd8...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/5pTWpY8l7B1X...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/4E8qFhiuYAWE...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/7sDQlyQACyT7...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/48bJ1sWhJKdB...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6362zAWHGgbr...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/4RlD0KvoqPZy...</td>\n",
       "      <td>...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/5pR8UH7jCUF9...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6vZfVcild1NP...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6hxgHNJjadmC...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2BxO4VLPjzrA...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6L7tmFIPKy98...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/1n2pCKUiJW7h...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2gB58ki3GMqy...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6C0au9ut1avz...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/1NvBOki5VmSS...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/31KuT5lcyp6N...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>id</th>\n",
       "      <td>0Za26pWVLQpKfXmb9FX10S</td>\n",
       "      <td>6295nz7PVXm49Ihqwm39Ew</td>\n",
       "      <td>0832Tptls5YicHPGgw7ssP</td>\n",
       "      <td>6yq33zsqWCd8cYXQdtAFZ9</td>\n",
       "      <td>5pTWpY8l7B1XcQnijEFGFj</td>\n",
       "      <td>4E8qFhiuYAWEYYAsYIf4dW</td>\n",
       "      <td>7sDQlyQACyT7mNHFwwEMI7</td>\n",
       "      <td>48bJ1sWhJKdB8M43uqi924</td>\n",
       "      <td>6362zAWHGgbrQaoeCFZpuO</td>\n",
       "      <td>4RlD0KvoqPZy5n9Zi76X9l</td>\n",
       "      <td>...</td>\n",
       "      <td>5pR8UH7jCUF9y3rJxDYX3i</td>\n",
       "      <td>6vZfVcild1NPkygdsudJfQ</td>\n",
       "      <td>6hxgHNJjadmCHAJPXw6AYL</td>\n",
       "      <td>2BxO4VLPjzrApKTHZjpz9G</td>\n",
       "      <td>6L7tmFIPKy98Js8ytCB1pT</td>\n",
       "      <td>1n2pCKUiJW7hxFUpbsjuUZ</td>\n",
       "      <td>2gB58ki3GMqyNsdsPpDECH</td>\n",
       "      <td>6C0au9ut1avz4zhryYHudG</td>\n",
       "      <td>1NvBOki5VmSSVelycoMo96</td>\n",
       "      <td>31KuT5lcyp6NlDBjp3EVTp</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>instrumentalness</th>\n",
       "      <td>0.902</td>\n",
       "      <td>0.0153</td>\n",
       "      <td>0.000494</td>\n",
       "      <td>1.35e-05</td>\n",
       "      <td>0.00381</td>\n",
       "      <td>0.895</td>\n",
       "      <td>0.233</td>\n",
       "      <td>0.51</td>\n",
       "      <td>0.937</td>\n",
       "      <td>0.00656</td>\n",
       "      <td>...</td>\n",
       "      <td>0.885</td>\n",
       "      <td>0.301</td>\n",
       "      <td>0.897</td>\n",
       "      <td>0.744</td>\n",
       "      <td>0.913</td>\n",
       "      <td>0.894</td>\n",
       "      <td>0.848</td>\n",
       "      <td>0.411</td>\n",
       "      <td>0.963</td>\n",
       "      <td>0.269</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>key</th>\n",
       "      <td>9</td>\n",
       "      <td>7</td>\n",
       "      <td>1</td>\n",
       "      <td>4</td>\n",
       "      <td>9</td>\n",
       "      <td>2</td>\n",
       "      <td>9</td>\n",
       "      <td>9</td>\n",
       "      <td>9</td>\n",
       "      <td>5</td>\n",
       "      <td>...</td>\n",
       "      <td>9</td>\n",
       "      <td>9</td>\n",
       "      <td>5</td>\n",
       "      <td>1</td>\n",
       "      <td>9</td>\n",
       "      <td>7</td>\n",
       "      <td>7</td>\n",
       "      <td>2</td>\n",
       "      <td>4</td>\n",
       "      <td>9</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>liveness</th>\n",
       "      <td>0.0677</td>\n",
       "      <td>0.0499</td>\n",
       "      <td>0.0389</td>\n",
       "      <td>0.124</td>\n",
       "      <td>0.364</td>\n",
       "      <td>0.242</td>\n",
       "      <td>0.411</td>\n",
       "      <td>0.409</td>\n",
       "      <td>0.524</td>\n",
       "      <td>0.258</td>\n",
       "      <td>...</td>\n",
       "      <td>0.634</td>\n",
       "      <td>0.734</td>\n",
       "      <td>0.618</td>\n",
       "      <td>0.824</td>\n",
       "      <td>0.891</td>\n",
       "      <td>0.903</td>\n",
       "      <td>0.702</td>\n",
       "      <td>0.93</td>\n",
       "      <td>0.616</td>\n",
       "      <td>0.932</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>loudness</th>\n",
       "      <td>-2.732</td>\n",
       "      <td>-2.256</td>\n",
       "      <td>-3.875</td>\n",
       "      <td>-2.63</td>\n",
       "      <td>-4.755</td>\n",
       "      <td>-1.839</td>\n",
       "      <td>-2.495</td>\n",
       "      <td>-2.65</td>\n",
       "      <td>-1.429</td>\n",
       "      <td>-5.643</td>\n",
       "      <td>...</td>\n",
       "      <td>-6.776</td>\n",
       "      <td>-5.087</td>\n",
       "      <td>-4.883</td>\n",
       "      <td>-6.162</td>\n",
       "      <td>-5.23</td>\n",
       "      <td>-11.863</td>\n",
       "      <td>-5.511</td>\n",
       "      <td>-5.626</td>\n",
       "      <td>-4.728</td>\n",
       "      <td>-4.779</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>mode</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>0</td>\n",
       "      <td>1</td>\n",
       "      <td>0</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>...</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>0</td>\n",
       "      <td>1</td>\n",
       "      <td>0</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>name</th>\n",
       "      <td>Respectable - Remastered</td>\n",
       "      <td>Before They Make Me Run - Remastered</td>\n",
       "      <td>Beast Of Burden - Remastered</td>\n",
       "      <td>Shattered - Remastered</td>\n",
       "      <td>Miss You - Remastered</td>\n",
       "      <td>When The Whip Comes Down - Remastered</td>\n",
       "      <td>Just My Imagination (Running Away With Me) - R...</td>\n",
       "      <td>Some Girls - Remastered</td>\n",
       "      <td>Lies - Remastered</td>\n",
       "      <td>Far Away Eyes - Remastered</td>\n",
       "      <td>...</td>\n",
       "      <td>Pain In My Heart - Live In Ireland / 1965</td>\n",
       "      <td>Down The Road Apiece - Live In Ireland / 1965</td>\n",
       "      <td>Time Is On My Side - Live In Ireland / 1965</td>\n",
       "      <td>I'm Alright - Live In Ireland / 1965</td>\n",
       "      <td>Off The Hook - Live In Ireland / 1965</td>\n",
       "      <td>Charlie's Intro To Little Red Rooster - Live I...</td>\n",
       "      <td>Little Red Rooster - Live In Ireland / 1965</td>\n",
       "      <td>Route 66 - Live In Ireland / 1965</td>\n",
       "      <td>I'm Moving On - Live In Ireland / 1965</td>\n",
       "      <td>The Last Time - Live In Ireland / 1965</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>popularity</th>\n",
       "      <td>30</td>\n",
       "      <td>25</td>\n",
       "      <td>59</td>\n",
       "      <td>29</td>\n",
       "      <td>48</td>\n",
       "      <td>20</td>\n",
       "      <td>20</td>\n",
       "      <td>21</td>\n",
       "      <td>18</td>\n",
       "      <td>22</td>\n",
       "      <td>...</td>\n",
       "      <td>26</td>\n",
       "      <td>25</td>\n",
       "      <td>27</td>\n",
       "      <td>25</td>\n",
       "      <td>25</td>\n",
       "      <td>24</td>\n",
       "      <td>26</td>\n",
       "      <td>27</td>\n",
       "      <td>24</td>\n",
       "      <td>25</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>preview_url</th>\n",
       "      <td>https://p.scdn.co/mp3-preview/f5e932d9acc6a359...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/ee5832b597975b27...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/6707390f6c75c161...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/bd736b977c5779dd...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/24d78633a528e097...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/04077ab8e65aa5bd...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/fdc2fc95a0570ab2...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/4f5b79e1aad39504...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/773b5d89ea8785ff...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/77dce854cf9bb957...</td>\n",
       "      <td>...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/f18e277f99716320...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/1b3f0b694fafd556...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/f05982fa4bd5604e...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/63e454d027fa6809...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/2b9e3ebd8aec9ab2...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/4a472a3dff8d8941...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/7fd37df80648f4d8...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/bb4461680e5ab01d...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/64c62c7e8f7eb6bf...</td>\n",
       "      <td>https://p.scdn.co/mp3-preview/4e412cd1b893a89b...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>speechiness</th>\n",
       "      <td>0.0639</td>\n",
       "      <td>0.123</td>\n",
       "      <td>0.0316</td>\n",
       "      <td>0.146</td>\n",
       "      <td>0.0427</td>\n",
       "      <td>0.0485</td>\n",
       "      <td>0.0678</td>\n",
       "      <td>0.0866</td>\n",
       "      <td>0.188</td>\n",
       "      <td>0.0286</td>\n",
       "      <td>...</td>\n",
       "      <td>0.078</td>\n",
       "      <td>0.117</td>\n",
       "      <td>0.039</td>\n",
       "      <td>0.12</td>\n",
       "      <td>0.0562</td>\n",
       "      <td>0.167</td>\n",
       "      <td>0.0757</td>\n",
       "      <td>0.152</td>\n",
       "      <td>0.103</td>\n",
       "      <td>0.059</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>tempo</th>\n",
       "      <td>152.204</td>\n",
       "      <td>132.596</td>\n",
       "      <td>100.66</td>\n",
       "      <td>140.398</td>\n",
       "      <td>109.673</td>\n",
       "      <td>130.538</td>\n",
       "      <td>112.957</td>\n",
       "      <td>72.078</td>\n",
       "      <td>162.285</td>\n",
       "      <td>94.295</td>\n",
       "      <td>...</td>\n",
       "      <td>183.775</td>\n",
       "      <td>93.172</td>\n",
       "      <td>98.415</td>\n",
       "      <td>117.236</td>\n",
       "      <td>76.844</td>\n",
       "      <td>109.424</td>\n",
       "      <td>115.7</td>\n",
       "      <td>166.196</td>\n",
       "      <td>162.889</td>\n",
       "      <td>180.024</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>time_signature</th>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>...</td>\n",
       "      <td>3</td>\n",
       "      <td>4</td>\n",
       "      <td>3</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>3</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>track_href</th>\n",
       "      <td>https://api.spotify.com/v1/tracks/0Za26pWVLQpK...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6295nz7PVXm4...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/0832Tptls5Yi...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6yq33zsqWCd8...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/5pTWpY8l7B1X...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/4E8qFhiuYAWE...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/7sDQlyQACyT7...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/48bJ1sWhJKdB...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6362zAWHGgbr...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/4RlD0KvoqPZy...</td>\n",
       "      <td>...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/5pR8UH7jCUF9...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6vZfVcild1NP...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6hxgHNJjadmC...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2BxO4VLPjzrA...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6L7tmFIPKy98...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/1n2pCKUiJW7h...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/2gB58ki3GMqy...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/6C0au9ut1avz...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/1NvBOki5VmSS...</td>\n",
       "      <td>https://api.spotify.com/v1/tracks/31KuT5lcyp6N...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>track_number</th>\n",
       "      <td>7</td>\n",
       "      <td>8</td>\n",
       "      <td>9</td>\n",
       "      <td>10</td>\n",
       "      <td>1</td>\n",
       "      <td>2</td>\n",
       "      <td>3</td>\n",
       "      <td>4</td>\n",
       "      <td>5</td>\n",
       "      <td>6</td>\n",
       "      <td>...</td>\n",
       "      <td>3</td>\n",
       "      <td>4</td>\n",
       "      <td>5</td>\n",
       "      <td>6</td>\n",
       "      <td>7</td>\n",
       "      <td>8</td>\n",
       "      <td>9</td>\n",
       "      <td>10</td>\n",
       "      <td>11</td>\n",
       "      <td>12</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>type</th>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>...</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "      <td>audio_features</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>uri</th>\n",
       "      <td>spotify:track:0Za26pWVLQpKfXmb9FX10S</td>\n",
       "      <td>spotify:track:6295nz7PVXm49Ihqwm39Ew</td>\n",
       "      <td>spotify:track:0832Tptls5YicHPGgw7ssP</td>\n",
       "      <td>spotify:track:6yq33zsqWCd8cYXQdtAFZ9</td>\n",
       "      <td>spotify:track:5pTWpY8l7B1XcQnijEFGFj</td>\n",
       "      <td>spotify:track:4E8qFhiuYAWEYYAsYIf4dW</td>\n",
       "      <td>spotify:track:7sDQlyQACyT7mNHFwwEMI7</td>\n",
       "      <td>spotify:track:48bJ1sWhJKdB8M43uqi924</td>\n",
       "      <td>spotify:track:6362zAWHGgbrQaoeCFZpuO</td>\n",
       "      <td>spotify:track:4RlD0KvoqPZy5n9Zi76X9l</td>\n",
       "      <td>...</td>\n",
       "      <td>spotify:track:5pR8UH7jCUF9y3rJxDYX3i</td>\n",
       "      <td>spotify:track:6vZfVcild1NPkygdsudJfQ</td>\n",
       "      <td>spotify:track:6hxgHNJjadmCHAJPXw6AYL</td>\n",
       "      <td>spotify:track:2BxO4VLPjzrApKTHZjpz9G</td>\n",
       "      <td>spotify:track:6L7tmFIPKy98Js8ytCB1pT</td>\n",
       "      <td>spotify:track:1n2pCKUiJW7hxFUpbsjuUZ</td>\n",
       "      <td>spotify:track:2gB58ki3GMqyNsdsPpDECH</td>\n",
       "      <td>spotify:track:6C0au9ut1avz4zhryYHudG</td>\n",
       "      <td>spotify:track:1NvBOki5VmSSVelycoMo96</td>\n",
       "      <td>spotify:track:31KuT5lcyp6NlDBjp3EVTp</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>valence</th>\n",
       "      <td>0.899</td>\n",
       "      <td>0.687</td>\n",
       "      <td>0.865</td>\n",
       "      <td>0.747</td>\n",
       "      <td>0.825</td>\n",
       "      <td>0.812</td>\n",
       "      <td>0.848</td>\n",
       "      <td>0.558</td>\n",
       "      <td>0.582</td>\n",
       "      <td>0.694</td>\n",
       "      <td>...</td>\n",
       "      <td>0.266</td>\n",
       "      <td>0.358</td>\n",
       "      <td>0.257</td>\n",
       "      <td>0.284</td>\n",
       "      <td>0.549</td>\n",
       "      <td>0.0357</td>\n",
       "      <td>0.431</td>\n",
       "      <td>0.588</td>\n",
       "      <td>0.244</td>\n",
       "      <td>0.484</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>34 rows × 286 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                                 0    \\\n",
       "_id                                           0Za26pWVLQpKfXmb9FX10S   \n",
       "acousticness                                                   0.129   \n",
       "album              {'name': 'Some Girls', 'type': 'album', 'artis...   \n",
       "album_id                                      54sqbAXxR1jFfyXb1WvrHK   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/0Za2...   \n",
       "artist_id                                     22bE4uQ6baNwSHPVcDxLCe   \n",
       "artist_name                                       The Rolling Stones   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "danceability                                                   0.456   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   187440   \n",
       "energy                                                         0.992   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCJN7800007'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/0Z...   \n",
       "href               https://api.spotify.com/v1/tracks/0Za26pWVLQpK...   \n",
       "id                                            0Za26pWVLQpKfXmb9FX10S   \n",
       "instrumentalness                                               0.902   \n",
       "key                                                                9   \n",
       "liveness                                                      0.0677   \n",
       "loudness                                                      -2.732   \n",
       "mode                                                               1   \n",
       "name                                        Respectable - Remastered   \n",
       "popularity                                                        30   \n",
       "preview_url        https://p.scdn.co/mp3-preview/f5e932d9acc6a359...   \n",
       "speechiness                                                   0.0639   \n",
       "tempo                                                        152.204   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/0Za26pWVLQpK...   \n",
       "track_number                                                       7   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:0Za26pWVLQpKfXmb9FX10S   \n",
       "valence                                                        0.899   \n",
       "\n",
       "                                                                 1    \\\n",
       "_id                                           6295nz7PVXm49Ihqwm39Ew   \n",
       "acousticness                                                   0.424   \n",
       "album              {'name': 'Some Girls', 'type': 'album', 'artis...   \n",
       "album_id                                      54sqbAXxR1jFfyXb1WvrHK   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/6295...   \n",
       "artist_id                                     22bE4uQ6baNwSHPVcDxLCe   \n",
       "artist_name                                       The Rolling Stones   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "danceability                                                   0.598   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   204960   \n",
       "energy                                                         0.943   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCJN7800008'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/62...   \n",
       "href               https://api.spotify.com/v1/tracks/6295nz7PVXm4...   \n",
       "id                                            6295nz7PVXm49Ihqwm39Ew   \n",
       "instrumentalness                                              0.0153   \n",
       "key                                                                7   \n",
       "liveness                                                      0.0499   \n",
       "loudness                                                      -2.256   \n",
       "mode                                                               1   \n",
       "name                            Before They Make Me Run - Remastered   \n",
       "popularity                                                        25   \n",
       "preview_url        https://p.scdn.co/mp3-preview/ee5832b597975b27...   \n",
       "speechiness                                                    0.123   \n",
       "tempo                                                        132.596   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/6295nz7PVXm4...   \n",
       "track_number                                                       8   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:6295nz7PVXm49Ihqwm39Ew   \n",
       "valence                                                        0.687   \n",
       "\n",
       "                                                                 2    \\\n",
       "_id                                           0832Tptls5YicHPGgw7ssP   \n",
       "acousticness                                                   0.413   \n",
       "album              {'name': 'Some Girls', 'type': 'album', 'artis...   \n",
       "album_id                                      54sqbAXxR1jFfyXb1WvrHK   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/0832...   \n",
       "artist_id                                     22bE4uQ6baNwSHPVcDxLCe   \n",
       "artist_name                                       The Rolling Stones   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "danceability                                                   0.786   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   265173   \n",
       "energy                                                          0.87   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCJN7800009'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/08...   \n",
       "href               https://api.spotify.com/v1/tracks/0832Tptls5Yi...   \n",
       "id                                            0832Tptls5YicHPGgw7ssP   \n",
       "instrumentalness                                            0.000494   \n",
       "key                                                                1   \n",
       "liveness                                                      0.0389   \n",
       "loudness                                                      -3.875   \n",
       "mode                                                               0   \n",
       "name                                    Beast Of Burden - Remastered   \n",
       "popularity                                                        59   \n",
       "preview_url        https://p.scdn.co/mp3-preview/6707390f6c75c161...   \n",
       "speechiness                                                   0.0316   \n",
       "tempo                                                         100.66   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/0832Tptls5Yi...   \n",
       "track_number                                                       9   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:0832Tptls5YicHPGgw7ssP   \n",
       "valence                                                        0.865   \n",
       "\n",
       "                                                                 3    \\\n",
       "_id                                           6yq33zsqWCd8cYXQdtAFZ9   \n",
       "acousticness                                                    0.46   \n",
       "album              {'name': 'Some Girls', 'type': 'album', 'artis...   \n",
       "album_id                                      54sqbAXxR1jFfyXb1WvrHK   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/6yq3...   \n",
       "artist_id                                     22bE4uQ6baNwSHPVcDxLCe   \n",
       "artist_name                                       The Rolling Stones   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "danceability                                                   0.737   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   226800   \n",
       "energy                                                         0.943   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCJN7800010'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/6y...   \n",
       "href               https://api.spotify.com/v1/tracks/6yq33zsqWCd8...   \n",
       "id                                            6yq33zsqWCd8cYXQdtAFZ9   \n",
       "instrumentalness                                            1.35e-05   \n",
       "key                                                                4   \n",
       "liveness                                                       0.124   \n",
       "loudness                                                       -2.63   \n",
       "mode                                                               1   \n",
       "name                                          Shattered - Remastered   \n",
       "popularity                                                        29   \n",
       "preview_url        https://p.scdn.co/mp3-preview/bd736b977c5779dd...   \n",
       "speechiness                                                    0.146   \n",
       "tempo                                                        140.398   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/6yq33zsqWCd8...   \n",
       "track_number                                                      10   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:6yq33zsqWCd8cYXQdtAFZ9   \n",
       "valence                                                        0.747   \n",
       "\n",
       "                                                                 4    \\\n",
       "_id                                           5pTWpY8l7B1XcQnijEFGFj   \n",
       "acousticness                                                   0.426   \n",
       "album              {'name': 'Some Girls (Deluxe Version)', 'type'...   \n",
       "album_id                                      6FjXxl9VLURGuubdXUn2J3   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/5pTW...   \n",
       "artist_id                                     22bE4uQ6baNwSHPVcDxLCe   \n",
       "artist_name                                       The Rolling Stones   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets  [AD, AR, AT, AU, BG, BO, BR, CL, CO, CR, CY, C...   \n",
       "danceability                                                   0.796   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   288667   \n",
       "energy                                                         0.711   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCJN7800001'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/5p...   \n",
       "href               https://api.spotify.com/v1/tracks/5pTWpY8l7B1X...   \n",
       "id                                            5pTWpY8l7B1XcQnijEFGFj   \n",
       "instrumentalness                                             0.00381   \n",
       "key                                                                9   \n",
       "liveness                                                       0.364   \n",
       "loudness                                                      -4.755   \n",
       "mode                                                               0   \n",
       "name                                           Miss You - Remastered   \n",
       "popularity                                                        48   \n",
       "preview_url        https://p.scdn.co/mp3-preview/24d78633a528e097...   \n",
       "speechiness                                                   0.0427   \n",
       "tempo                                                        109.673   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/5pTWpY8l7B1X...   \n",
       "track_number                                                       1   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:5pTWpY8l7B1XcQnijEFGFj   \n",
       "valence                                                        0.825   \n",
       "\n",
       "                                                                 5    \\\n",
       "_id                                           4E8qFhiuYAWEYYAsYIf4dW   \n",
       "acousticness                                                   0.425   \n",
       "album              {'name': 'Some Girls (Deluxe Version)', 'type'...   \n",
       "album_id                                      6FjXxl9VLURGuubdXUn2J3   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/4E8q...   \n",
       "artist_id                                     22bE4uQ6baNwSHPVcDxLCe   \n",
       "artist_name                                       The Rolling Stones   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets  [AD, AR, AT, AU, BG, BO, BR, CL, CO, CR, CY, C...   \n",
       "danceability                                                   0.502   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   260960   \n",
       "energy                                                         0.983   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCJN7800002'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/4E...   \n",
       "href               https://api.spotify.com/v1/tracks/4E8qFhiuYAWE...   \n",
       "id                                            4E8qFhiuYAWEYYAsYIf4dW   \n",
       "instrumentalness                                               0.895   \n",
       "key                                                                2   \n",
       "liveness                                                       0.242   \n",
       "loudness                                                      -1.839   \n",
       "mode                                                               1   \n",
       "name                           When The Whip Comes Down - Remastered   \n",
       "popularity                                                        20   \n",
       "preview_url        https://p.scdn.co/mp3-preview/04077ab8e65aa5bd...   \n",
       "speechiness                                                   0.0485   \n",
       "tempo                                                        130.538   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/4E8qFhiuYAWE...   \n",
       "track_number                                                       2   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:4E8qFhiuYAWEYYAsYIf4dW   \n",
       "valence                                                        0.812   \n",
       "\n",
       "                                                                 6    \\\n",
       "_id                                           7sDQlyQACyT7mNHFwwEMI7   \n",
       "acousticness                                                   0.533   \n",
       "album              {'name': 'Some Girls (Deluxe Version)', 'type'...   \n",
       "album_id                                      6FjXxl9VLURGuubdXUn2J3   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/7sDQ...   \n",
       "artist_id                                     22bE4uQ6baNwSHPVcDxLCe   \n",
       "artist_name                                       The Rolling Stones   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets  [AD, AR, AT, AU, BG, BO, BR, CL, CO, CR, CY, C...   \n",
       "danceability                                                   0.449   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   278173   \n",
       "energy                                                          0.91   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'GBCJN7800003'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/7s...   \n",
       "href               https://api.spotify.com/v1/tracks/7sDQlyQACyT7...   \n",
       "id                                            7sDQlyQACyT7mNHFwwEMI7   \n",
       "instrumentalness                                               0.233   \n",
       "key                                                                9   \n",
       "liveness                                                       0.411   \n",
       "loudness                                                      -2.495   \n",
       "mode                                                               1   \n",
       "name               Just My Imagination (Running Away With Me) - R...   \n",
       "popularity                                                        20   \n",
       "preview_url        https://p.scdn.co/mp3-preview/fdc2fc95a0570ab2...   \n",
       "speechiness                                                   0.0678   \n",
       "tempo                                                        112.957   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/7sDQlyQACyT7...   \n",
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       "speechiness                                                   0.0757   \n",
       "tempo                                                          115.7   \n",
       "time_signature                                                     3   \n",
       "track_href         https://api.spotify.com/v1/tracks/2gB58ki3GMqy...   \n",
       "track_number                                                       9   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:2gB58ki3GMqyNsdsPpDECH   \n",
       "valence                                                        0.431   \n",
       "\n",
       "                                                                 283  \\\n",
       "_id                                           6C0au9ut1avz4zhryYHudG   \n",
       "acousticness                                                  0.0184   \n",
       "album              {'name': 'Live 1965: Music From Charlie Is My ...   \n",
       "album_id                                      5eTqRwTGKPBUiUuN1rFaXD   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/6C0a...   \n",
       "artist_id                                     22bE4uQ6baNwSHPVcDxLCe   \n",
       "artist_name                                       The Rolling Stones   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "danceability                                                   0.245   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   164320   \n",
       "energy                                                         0.964   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'USA171210009'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/6C...   \n",
       "href               https://api.spotify.com/v1/tracks/6C0au9ut1avz...   \n",
       "id                                            6C0au9ut1avz4zhryYHudG   \n",
       "instrumentalness                                               0.411   \n",
       "key                                                                2   \n",
       "liveness                                                        0.93   \n",
       "loudness                                                      -5.626   \n",
       "mode                                                               1   \n",
       "name                               Route 66 - Live In Ireland / 1965   \n",
       "popularity                                                        27   \n",
       "preview_url        https://p.scdn.co/mp3-preview/bb4461680e5ab01d...   \n",
       "speechiness                                                    0.152   \n",
       "tempo                                                        166.196   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/6C0au9ut1avz...   \n",
       "track_number                                                      10   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:6C0au9ut1avz4zhryYHudG   \n",
       "valence                                                        0.588   \n",
       "\n",
       "                                                                 284  \\\n",
       "_id                                           1NvBOki5VmSSVelycoMo96   \n",
       "acousticness                                                   0.002   \n",
       "album              {'name': 'Live 1965: Music From Charlie Is My ...   \n",
       "album_id                                      5eTqRwTGKPBUiUuN1rFaXD   \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/1NvB...   \n",
       "artist_id                                     22bE4uQ6baNwSHPVcDxLCe   \n",
       "artist_name                                       The Rolling Stones   \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...   \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...   \n",
       "danceability                                                   0.124   \n",
       "disc_number                                                        1   \n",
       "duration_ms                                                   148560   \n",
       "energy                                                          0.92   \n",
       "explicit                                                       False   \n",
       "external_ids                                {'isrc': 'USA171210010'}   \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/1N...   \n",
       "href               https://api.spotify.com/v1/tracks/1NvBOki5VmSS...   \n",
       "id                                            1NvBOki5VmSSVelycoMo96   \n",
       "instrumentalness                                               0.963   \n",
       "key                                                                4   \n",
       "liveness                                                       0.616   \n",
       "loudness                                                      -4.728   \n",
       "mode                                                               1   \n",
       "name                          I'm Moving On - Live In Ireland / 1965   \n",
       "popularity                                                        24   \n",
       "preview_url        https://p.scdn.co/mp3-preview/64c62c7e8f7eb6bf...   \n",
       "speechiness                                                    0.103   \n",
       "tempo                                                        162.889   \n",
       "time_signature                                                     4   \n",
       "track_href         https://api.spotify.com/v1/tracks/1NvBOki5VmSS...   \n",
       "track_number                                                      11   \n",
       "type                                                  audio_features   \n",
       "uri                             spotify:track:1NvBOki5VmSSVelycoMo96   \n",
       "valence                                                        0.244   \n",
       "\n",
       "                                                                 285  \n",
       "_id                                           31KuT5lcyp6NlDBjp3EVTp  \n",
       "acousticness                                                0.000283  \n",
       "album              {'name': 'Live 1965: Music From Charlie Is My ...  \n",
       "album_id                                      5eTqRwTGKPBUiUuN1rFaXD  \n",
       "analysis_url       https://api.spotify.com/v1/audio-analysis/31Ku...  \n",
       "artist_id                                     22bE4uQ6baNwSHPVcDxLCe  \n",
       "artist_name                                       The Rolling Stones  \n",
       "artists            [{'name': 'The Rolling Stones', 'type': 'artis...  \n",
       "available_markets  [AD, AR, AT, AU, BE, BG, BO, BR, CH, CL, CO, C...  \n",
       "danceability                                                   0.213  \n",
       "disc_number                                                        1  \n",
       "duration_ms                                                   189600  \n",
       "energy                                                         0.929  \n",
       "explicit                                                       False  \n",
       "external_ids                                {'isrc': 'USA171210011'}  \n",
       "external_urls      {'spotify': 'https://open.spotify.com/track/31...  \n",
       "href               https://api.spotify.com/v1/tracks/31KuT5lcyp6N...  \n",
       "id                                            31KuT5lcyp6NlDBjp3EVTp  \n",
       "instrumentalness                                               0.269  \n",
       "key                                                                9  \n",
       "liveness                                                       0.932  \n",
       "loudness                                                      -4.779  \n",
       "mode                                                               1  \n",
       "name                          The Last Time - Live In Ireland / 1965  \n",
       "popularity                                                        25  \n",
       "preview_url        https://p.scdn.co/mp3-preview/4e412cd1b893a89b...  \n",
       "speechiness                                                    0.059  \n",
       "tempo                                                        180.024  \n",
       "time_signature                                                     4  \n",
       "track_href         https://api.spotify.com/v1/tracks/31KuT5lcyp6N...  \n",
       "track_number                                                      12  \n",
       "type                                                  audio_features  \n",
       "uri                             spotify:track:31KuT5lcyp6NlDBjp3EVTp  \n",
       "valence                                                        0.484  \n",
       "\n",
       "[34 rows x 286 columns]"
      ]
     },
     "execution_count": 32,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "stones_tracks = pd.DataFrame(list(tracks.find({'artist_id': stones_id})))\n",
    "stones_tracks.T"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "How happy are the Beatles and Stones tracks?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<matplotlib.axes._subplots.AxesSubplot at 0x7fa62265d438>"
      ]
     },
     "execution_count": 33,
     "metadata": {},
     "output_type": "execute_result"
    },
    {
     "data": {
      "image/png": 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7uffeexdY0c5OP/10+pnxlV6/r2uXXt99L7X2ojL1fXuuaUHOPvunOXLkf4ho/oeI+++/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\nQmCC\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7fa630ed8518>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "beatles_tracks['valence'].hist()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<matplotlib.axes._subplots.AxesSubplot at 0x7fa62c0b19b0>"
      ]
     },
     "execution_count": 34,
     "metadata": {},
     "output_type": "execute_result"
    },
    {
     "data": {
      "image/png": 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jl2amnjvXzp8x9nPfXff+xR7Gr70vLXKmfjPw0m3W3xgRz29+tm3oZmbWrolNPSLuAx7d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\n81WxAAAAAElFTkSuQmCC\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7fa623051080>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "stones_tracks['valence'].hist()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Lyrics search<a name=\"lyricssearch\"></a>\n",
    "Now to find the lyrics for each track. \n",
    "\n",
    "We start by searching for the Genius ID for the artists.\n",
    "\n",
    "Note that Genius doesn't like Python-generated requests to its API, so we set the header to pretend to be a command-line `curl` request.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 35,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "def genius_artist_search(artist_name, per_page=20):\n",
    "    query = urllib.parse.urlencode({'q': artist_name,\n",
    "                                    'per_page': str(per_page)\n",
    "                                   })\n",
    "    headers = {'Accept': 'application/json',\n",
    "               'Authorization': 'Bearer ' + config['genius']['token'],\n",
    "               'User-Agent': 'curl/7.9.8 (i686-pc-linux-gnu) libcurl 7.9.8 (OpenSSL 0.9.6b) (ipv6 enabled)'}\n",
    "    request = urllib.request.Request('https://api.genius.com/search?{}'.format(query), \n",
    "                                     headers=headers,\n",
    "                                     method='GET')\n",
    "    with urllib.request.urlopen(request) as f:\n",
    "            response = json.loads(f.read().decode('utf-8'))\n",
    "            return response"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "586"
      ]
     },
     "execution_count": 36,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "response = genius_artist_search('the beatles')\n",
    "beatles_genius_id = [hit['result']['primary_artist']['id'] for hit in response['response']['hits']][0]\n",
    "beatles_genius_id"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "774"
      ]
     },
     "execution_count": 38,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "response = genius_artist_search('rolling stones')\n",
    "stones_genius_id = [hit['result']['primary_artist']['id'] for hit in response['response']['hits']][0]\n",
    "stones_genius_id"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We can now get the song information for each track for each artist. Note that Genius keeps lots of things to do with artists, including sleeve notes and the like. We're just after the lyrics."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 40,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "def genius_song_search(artist_id):\n",
    "    songs = pd.DataFrame()\n",
    "    page = 1\n",
    "    while page:\n",
    "        query = urllib.parse.urlencode({'page': page, 'per_page': 20})\n",
    "        headers = {'Accept': 'application/json',\n",
    "               'Authorization': 'Bearer ' + config['genius']['token'],\n",
    "               'User-Agent': 'curl/7.9.8 (i686-pc-linux-gnu) libcurl 7.9.8 (OpenSSL 0.9.6b) (ipv6 enabled)'}\n",
    "        request = urllib.request.Request('https://api.genius.com/artists/{id}/songs?{query}'.format(id=artist_id,\n",
    "                                                                                               query=query), \n",
    "                                     headers=headers,\n",
    "                                     method='GET')\n",
    "        with urllib.request.urlopen(request) as f:\n",
    "            response = json.loads(f.read().decode('utf-8'))\n",
    "            page = response['response']['next_page']\n",
    "            for song in response['response']['songs']:\n",
    "                if song['path'].endswith('lyrics'):\n",
    "                    song['_id'] = song['id']\n",
    "                    genius_tracks.replace_one({'_id': song['id']}, song, upsert=True)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 65,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "402"
      ]
     },
     "execution_count": 65,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "genius_song_search(beatles_genius_id)\n",
    "genius_tracks.find().count()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 41,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1071"
      ]
     },
     "execution_count": 41,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "genius_song_search(stones_genius_id)\n",
    "genius_tracks.find().count()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 67,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'_id': 210353,\n",
       " 'annotation_count': 1,\n",
       " 'api_path': '/songs/210353',\n",
       " 'full_title': '1822! by\\xa0The\\xa0Beatles',\n",
       " 'header_image_thumbnail_url': 'https://s3.amazonaws.com/rapgenius/Live%20at%20the%20BBC%20disc%202%20BBC.png',\n",
       " 'header_image_url': 'https://s3.amazonaws.com/rapgenius/Live%20at%20the%20BBC%20disc%202%20BBC.png',\n",
       " 'id': 210353,\n",
       " 'lyrics_owner_id': 225680,\n",
       " 'path': '/The-beatles-1822-lyrics',\n",
       " 'primary_artist': {'api_path': '/artists/586',\n",
       "  'header_image_url': 'https://images.genius.com/b82dbb78926a812abfa10886ac84c1a8.1000x523x1.jpg',\n",
       "  'id': 586,\n",
       "  'image_url': 'https://images.genius.com/ad1f59e8a03be4eb521e88015d15d6e8.200x200x1.jpg',\n",
       "  'is_meme_verified': False,\n",
       "  'is_verified': False,\n",
       "  'name': 'The Beatles',\n",
       "  'url': 'https://genius.com/artists/The-beatles'},\n",
       " 'pyongs_count': None,\n",
       " 'song_art_image_thumbnail_url': 'https://s3.amazonaws.com/rapgenius/Live%20at%20the%20BBC%20disc%202%20BBC.png',\n",
       " 'stats': {'hot': False, 'unreviewed_annotations': 0},\n",
       " 'title': '1822!',\n",
       " 'url': 'https://genius.com/The-beatles-1822-lyrics'}"
      ]
     },
     "execution_count": 67,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "genius_tracks.find_one()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 68,
   "metadata": {
    "collapsed": false,
    "scrolled": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>0</th>\n",
       "      <th>1</th>\n",
       "      <th>2</th>\n",
       "      <th>3</th>\n",
       "      <th>4</th>\n",
       "      <th>5</th>\n",
       "      <th>6</th>\n",
       "      <th>7</th>\n",
       "      <th>8</th>\n",
       "      <th>9</th>\n",
       "      <th>...</th>\n",
       "      <th>601</th>\n",
       "      <th>602</th>\n",
       "      <th>603</th>\n",
       "      <th>604</th>\n",
       "      <th>605</th>\n",
       "      <th>606</th>\n",
       "      <th>607</th>\n",
       "      <th>608</th>\n",
       "      <th>609</th>\n",
       "      <th>610</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>_id</th>\n",
       "      <td>210353</td>\n",
       "      <td>123444</td>\n",
       "      <td>1679385</td>\n",
       "      <td>123816</td>\n",
       "      <td>1436</td>\n",
       "      <td>118166</td>\n",
       "      <td>210540</td>\n",
       "      <td>210315</td>\n",
       "      <td>123414</td>\n",
       "      <td>123415</td>\n",
       "      <td>...</td>\n",
       "      <td>2853637</td>\n",
       "      <td>115809</td>\n",
       "      <td>1205907</td>\n",
       "      <td>1383236</td>\n",
       "      <td>1081664</td>\n",
       "      <td>350065</td>\n",
       "      <td>1226422</td>\n",
       "      <td>98114</td>\n",
       "      <td>114477</td>\n",
       "      <td>642622</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>annotation_count</th>\n",
       "      <td>1</td>\n",
       "      <td>12</td>\n",
       "      <td>1</td>\n",
       "      <td>5</td>\n",
       "      <td>19</td>\n",
       "      <td>13</td>\n",
       "      <td>0</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>4</td>\n",
       "      <td>...</td>\n",
       "      <td>0</td>\n",
       "      <td>7</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "      <td>12</td>\n",
       "      <td>1</td>\n",
       "      <td>6</td>\n",
       "      <td>4</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>api_path</th>\n",
       "      <td>/songs/210353</td>\n",
       "      <td>/songs/123444</td>\n",
       "      <td>/songs/1679385</td>\n",
       "      <td>/songs/123816</td>\n",
       "      <td>/songs/1436</td>\n",
       "      <td>/songs/118166</td>\n",
       "      <td>/songs/210540</td>\n",
       "      <td>/songs/210315</td>\n",
       "      <td>/songs/123414</td>\n",
       "      <td>/songs/123415</td>\n",
       "      <td>...</td>\n",
       "      <td>/songs/2853637</td>\n",
       "      <td>/songs/115809</td>\n",
       "      <td>/songs/1205907</td>\n",
       "      <td>/songs/1383236</td>\n",
       "      <td>/songs/1081664</td>\n",
       "      <td>/songs/350065</td>\n",
       "      <td>/songs/1226422</td>\n",
       "      <td>/songs/98114</td>\n",
       "      <td>/songs/114477</td>\n",
       "      <td>/songs/642622</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>full_title</th>\n",
       "      <td>1822! by The Beatles</td>\n",
       "      <td>Across the Universe by The Beatles</td>\n",
       "      <td>Across the Universe (Wildlife Version) by The ...</td>\n",
       "      <td>Act Naturally by The Beatles</td>\n",
       "      <td>A Day In the Life by The Beatles</td>\n",
       "      <td>A Hard Day's Night by The Beatles</td>\n",
       "      <td>Ain't She Sweet by The Beatles</td>\n",
       "      <td>A Little Rhyme by The Beatles (Ft. John &amp; Rodn...</td>\n",
       "      <td>All I've Got to Do by The Beatles</td>\n",
       "      <td>All My Loving by The Beatles</td>\n",
       "      <td>...</td>\n",
       "      <td>Where Bluebirds Fly by Radiohead</td>\n",
       "      <td>Where I End and You Begin by Radiohead</td>\n",
       "      <td>Wicked Child by Radiohead</td>\n",
       "      <td>Wish You Were Here by Radiohead</td>\n",
       "      <td>Wonderwall by Radiohead</td>\n",
       "      <td>Worrywort by Radiohead</td>\n",
       "      <td>Yes I Am by Radiohead</td>\n",
       "      <td>You by Radiohead</td>\n",
       "      <td>You and Whose Army? by Radiohead</td>\n",
       "      <td>You Never Wash Up After Yourself by Radiohead</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>header_image_thumbnail_url</th>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/Live%20at%2...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/the_beatles...</td>\n",
       "      <td>https://images.genius.com/a3463161b8063164d2e3...</td>\n",
       "      <td>https://images.genius.com/adbf27acc77a06acfa4a...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/The-Beatles...</td>\n",
       "      <td>https://images.genius.com/68c11c7f5b6b66194d77...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/view.jpg</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/110537_cda_...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/Beatles2.jpg</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/Beatles2.jpg</td>\n",
       "      <td>...</td>\n",
       "      <td>https://images.genius.com/8ae50c3392a15c9c558c...</td>\n",
       "      <td>https://images.genius.com/5ccb8a89b0f674962982...</td>\n",
       "      <td>https://images.genius.com/25efaa8c220fdcfec8a9...</td>\n",
       "      <td>https://images.genius.com/25efaa8c220fdcfec8a9...</td>\n",
       "      <td>https://images.genius.com/25efaa8c220fdcfec8a9...</td>\n",
       "      <td>https://images.genius.com/e4bdb3ab980f0f1b6ce4...</td>\n",
       "      <td>https://images.genius.com/6b45ffa7fd55970e6411...</td>\n",
       "      <td>https://images.genius.com/6c0cb1c55fc88c941dac...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/1359924238_...</td>\n",
       "      <td>https://images.rapgenius.com/0d14d86aec456da16...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>header_image_url</th>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/Live%20at%2...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/the_beatles...</td>\n",
       "      <td>https://images.genius.com/a3463161b8063164d2e3...</td>\n",
       "      <td>https://images.genius.com/adbf27acc77a06acfa4a...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/The-Beatles...</td>\n",
       "      <td>https://images.genius.com/68c11c7f5b6b66194d77...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/view.jpg</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/110537_cda_...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/Beatles2.jpg</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/Beatles2.jpg</td>\n",
       "      <td>...</td>\n",
       "      <td>https://images.genius.com/8ae50c3392a15c9c558c...</td>\n",
       "      <td>https://images.genius.com/5ccb8a89b0f674962982...</td>\n",
       "      <td>https://images.genius.com/25efaa8c220fdcfec8a9...</td>\n",
       "      <td>https://images.genius.com/25efaa8c220fdcfec8a9...</td>\n",
       "      <td>https://images.genius.com/25efaa8c220fdcfec8a9...</td>\n",
       "      <td>https://images.genius.com/e4bdb3ab980f0f1b6ce4...</td>\n",
       "      <td>https://images.genius.com/6b45ffa7fd55970e6411...</td>\n",
       "      <td>https://images.genius.com/6c0cb1c55fc88c941dac...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/1359924238_...</td>\n",
       "      <td>https://images.rapgenius.com/0d14d86aec456da16...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>id</th>\n",
       "      <td>210353</td>\n",
       "      <td>123444</td>\n",
       "      <td>1679385</td>\n",
       "      <td>123816</td>\n",
       "      <td>1436</td>\n",
       "      <td>118166</td>\n",
       "      <td>210540</td>\n",
       "      <td>210315</td>\n",
       "      <td>123414</td>\n",
       "      <td>123415</td>\n",
       "      <td>...</td>\n",
       "      <td>2853637</td>\n",
       "      <td>115809</td>\n",
       "      <td>1205907</td>\n",
       "      <td>1383236</td>\n",
       "      <td>1081664</td>\n",
       "      <td>350065</td>\n",
       "      <td>1226422</td>\n",
       "      <td>98114</td>\n",
       "      <td>114477</td>\n",
       "      <td>642622</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>lyrics_owner_id</th>\n",
       "      <td>225680</td>\n",
       "      <td>22533</td>\n",
       "      <td>1549345</td>\n",
       "      <td>22533</td>\n",
       "      <td>7</td>\n",
       "      <td>1553</td>\n",
       "      <td>250962</td>\n",
       "      <td>250962</td>\n",
       "      <td>22533</td>\n",
       "      <td>22533</td>\n",
       "      <td>...</td>\n",
       "      <td>2726776</td>\n",
       "      <td>2726776</td>\n",
       "      <td>1549345</td>\n",
       "      <td>1549345</td>\n",
       "      <td>1549345</td>\n",
       "      <td>428027</td>\n",
       "      <td>1549345</td>\n",
       "      <td>116170</td>\n",
       "      <td>116340</td>\n",
       "      <td>1158811</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>path</th>\n",
       "      <td>/The-beatles-1822-lyrics</td>\n",
       "      <td>/The-beatles-across-the-universe-lyrics</td>\n",
       "      <td>/The-beatles-across-the-universe-wildlife-vers...</td>\n",
       "      <td>/The-beatles-act-naturally-lyrics</td>\n",
       "      <td>/The-beatles-a-day-in-the-life-lyrics</td>\n",
       "      <td>/The-beatles-a-hard-days-night-lyrics</td>\n",
       "      <td>/The-beatles-aint-she-sweet-lyrics</td>\n",
       "      <td>/The-beatles-a-little-rhyme-lyrics</td>\n",
       "      <td>/The-beatles-all-ive-got-to-do-lyrics</td>\n",
       "      <td>/The-beatles-all-my-loving-lyrics</td>\n",
       "      <td>...</td>\n",
       "      <td>/Radiohead-where-bluebirds-fly-lyrics</td>\n",
       "      <td>/Radiohead-where-i-end-and-you-begin-lyrics</td>\n",
       "      <td>/Radiohead-wicked-child-lyrics</td>\n",
       "      <td>/Radiohead-wish-you-were-here-lyrics</td>\n",
       "      <td>/Radiohead-wonderwall-lyrics</td>\n",
       "      <td>/Radiohead-worrywort-lyrics</td>\n",
       "      <td>/Radiohead-yes-i-am-lyrics</td>\n",
       "      <td>/Radiohead-you-lyrics</td>\n",
       "      <td>/Radiohead-you-and-whose-army-lyrics</td>\n",
       "      <td>/Radiohead-you-never-wash-up-after-yourself-ly...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>primary_artist</th>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "      <td>{'is_meme_verified': False, 'header_image_url'...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>pyongs_count</th>\n",
       "      <td>NaN</td>\n",
       "      <td>18</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2</td>\n",
       "      <td>34</td>\n",
       "      <td>4</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>1</td>\n",
       "      <td>4</td>\n",
       "      <td>...</td>\n",
       "      <td>NaN</td>\n",
       "      <td>5</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2</td>\n",
       "      <td>1</td>\n",
       "      <td>4</td>\n",
       "      <td>NaN</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>song_art_image_thumbnail_url</th>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/Live%20at%2...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/the_beatles...</td>\n",
       "      <td>https://images.genius.com/a3463161b8063164d2e3...</td>\n",
       "      <td>https://images.genius.com/adbf27acc77a06acfa4a...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/The-Beatles...</td>\n",
       "      <td>https://images.genius.com/68c11c7f5b6b66194d77...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/view.jpg</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/110537_cda_...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/Beatles2.jpg</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/Beatles2.jpg</td>\n",
       "      <td>...</td>\n",
       "      <td>https://images.genius.com/8ae50c3392a15c9c558c...</td>\n",
       "      <td>https://images.genius.com/5ccb8a89b0f674962982...</td>\n",
       "      <td>https://images.genius.com/25efaa8c220fdcfec8a9...</td>\n",
       "      <td>https://images.genius.com/25efaa8c220fdcfec8a9...</td>\n",
       "      <td>https://images.genius.com/25efaa8c220fdcfec8a9...</td>\n",
       "      <td>https://images.genius.com/e4bdb3ab980f0f1b6ce4...</td>\n",
       "      <td>https://images.genius.com/6b45ffa7fd55970e6411...</td>\n",
       "      <td>https://images.genius.com/6c0cb1c55fc88c941dac...</td>\n",
       "      <td>https://s3.amazonaws.com/rapgenius/1359924238_...</td>\n",
       "      <td>https://images.rapgenius.com/0d14d86aec456da16...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>stats</th>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0, 'p...</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0, 'p...</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0, 'p...</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0, 'p...</td>\n",
       "      <td>...</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 2, 'p...</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 11}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 1}</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0, 'p...</td>\n",
       "      <td>{'hot': False, 'unreviewed_annotations': 0}</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>title</th>\n",
       "      <td>1822!</td>\n",
       "      <td>Across the Universe</td>\n",
       "      <td>Across the Universe (Wildlife Version)</td>\n",
       "      <td>Act Naturally</td>\n",
       "      <td>A Day In the Life</td>\n",
       "      <td>A Hard Day's Night</td>\n",
       "      <td>Ain't She Sweet</td>\n",
       "      <td>A Little Rhyme</td>\n",
       "      <td>All I've Got to Do</td>\n",
       "      <td>All My Loving</td>\n",
       "      <td>...</td>\n",
       "      <td>Where Bluebirds Fly</td>\n",
       "      <td>Where I End and You Begin</td>\n",
       "      <td>Wicked Child</td>\n",
       "      <td>Wish You Were Here</td>\n",
       "      <td>Wonderwall</td>\n",
       "      <td>Worrywort</td>\n",
       "      <td>Yes I Am</td>\n",
       "      <td>You</td>\n",
       "      <td>You and Whose Army?</td>\n",
       "      <td>You Never Wash Up After Yourself</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>url</th>\n",
       "      <td>https://genius.com/The-beatles-1822-lyrics</td>\n",
       "      <td>https://genius.com/The-beatles-across-the-univ...</td>\n",
       "      <td>https://genius.com/The-beatles-across-the-univ...</td>\n",
       "      <td>https://genius.com/The-beatles-act-naturally-l...</td>\n",
       "      <td>https://genius.com/The-beatles-a-day-in-the-li...</td>\n",
       "      <td>https://genius.com/The-beatles-a-hard-days-nig...</td>\n",
       "      <td>https://genius.com/The-beatles-aint-she-sweet-...</td>\n",
       "      <td>https://genius.com/The-beatles-a-little-rhyme-...</td>\n",
       "      <td>https://genius.com/The-beatles-all-ive-got-to-...</td>\n",
       "      <td>https://genius.com/The-beatles-all-my-loving-l...</td>\n",
       "      <td>...</td>\n",
       "      <td>https://genius.com/Radiohead-where-bluebirds-f...</td>\n",
       "      <td>https://genius.com/Radiohead-where-i-end-and-y...</td>\n",
       "      <td>https://genius.com/Radiohead-wicked-child-lyrics</td>\n",
       "      <td>https://genius.com/Radiohead-wish-you-were-her...</td>\n",
       "      <td>https://genius.com/Radiohead-wonderwall-lyrics</td>\n",
       "      <td>https://genius.com/Radiohead-worrywort-lyrics</td>\n",
       "      <td>https://genius.com/Radiohead-yes-i-am-lyrics</td>\n",
       "      <td>https://genius.com/Radiohead-you-lyrics</td>\n",
       "      <td>https://genius.com/Radiohead-you-and-whose-arm...</td>\n",
       "      <td>https://genius.com/Radiohead-you-never-wash-up...</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>15 rows × 611 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "                                                                            0    \\\n",
       "_id                                                                      210353   \n",
       "annotation_count                                                              1   \n",
       "api_path                                                          /songs/210353   \n",
       "full_title                                                 1822! by The Beatles   \n",
       "header_image_thumbnail_url    https://s3.amazonaws.com/rapgenius/Live%20at%2...   \n",
       "header_image_url              https://s3.amazonaws.com/rapgenius/Live%20at%2...   \n",
       "id                                                                       210353   \n",
       "lyrics_owner_id                                                          225680   \n",
       "path                                                   /The-beatles-1822-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                NaN   \n",
       "song_art_image_thumbnail_url  https://s3.amazonaws.com/rapgenius/Live%20at%2...   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                                                     1822!   \n",
       "url                                  https://genius.com/The-beatles-1822-lyrics   \n",
       "\n",
       "                                                                            1    \\\n",
       "_id                                                                      123444   \n",
       "annotation_count                                                             12   \n",
       "api_path                                                          /songs/123444   \n",
       "full_title                                   Across the Universe by The Beatles   \n",
       "header_image_thumbnail_url    https://s3.amazonaws.com/rapgenius/the_beatles...   \n",
       "header_image_url              https://s3.amazonaws.com/rapgenius/the_beatles...   \n",
       "id                                                                       123444   \n",
       "lyrics_owner_id                                                           22533   \n",
       "path                                    /The-beatles-across-the-universe-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                 18   \n",
       "song_art_image_thumbnail_url  https://s3.amazonaws.com/rapgenius/the_beatles...   \n",
       "stats                         {'hot': False, 'unreviewed_annotations': 0, 'p...   \n",
       "title                                                       Across the Universe   \n",
       "url                           https://genius.com/The-beatles-across-the-univ...   \n",
       "\n",
       "                                                                            2    \\\n",
       "_id                                                                     1679385   \n",
       "annotation_count                                                              1   \n",
       "api_path                                                         /songs/1679385   \n",
       "full_title                    Across the Universe (Wildlife Version) by The ...   \n",
       "header_image_thumbnail_url    https://images.genius.com/a3463161b8063164d2e3...   \n",
       "header_image_url              https://images.genius.com/a3463161b8063164d2e3...   \n",
       "id                                                                      1679385   \n",
       "lyrics_owner_id                                                         1549345   \n",
       "path                          /The-beatles-across-the-universe-wildlife-vers...   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                NaN   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/a3463161b8063164d2e3...   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                    Across the Universe (Wildlife Version)   \n",
       "url                           https://genius.com/The-beatles-across-the-univ...   \n",
       "\n",
       "                                                                            3    \\\n",
       "_id                                                                      123816   \n",
       "annotation_count                                                              5   \n",
       "api_path                                                          /songs/123816   \n",
       "full_title                                         Act Naturally by The Beatles   \n",
       "header_image_thumbnail_url    https://images.genius.com/adbf27acc77a06acfa4a...   \n",
       "header_image_url              https://images.genius.com/adbf27acc77a06acfa4a...   \n",
       "id                                                                       123816   \n",
       "lyrics_owner_id                                                           22533   \n",
       "path                                          /The-beatles-act-naturally-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                  2   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/adbf27acc77a06acfa4a...   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                                             Act Naturally   \n",
       "url                           https://genius.com/The-beatles-act-naturally-l...   \n",
       "\n",
       "                                                                            4    \\\n",
       "_id                                                                        1436   \n",
       "annotation_count                                                             19   \n",
       "api_path                                                            /songs/1436   \n",
       "full_title                                     A Day In the Life by The Beatles   \n",
       "header_image_thumbnail_url    https://s3.amazonaws.com/rapgenius/The-Beatles...   \n",
       "header_image_url              https://s3.amazonaws.com/rapgenius/The-Beatles...   \n",
       "id                                                                         1436   \n",
       "lyrics_owner_id                                                               7   \n",
       "path                                      /The-beatles-a-day-in-the-life-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                 34   \n",
       "song_art_image_thumbnail_url  https://s3.amazonaws.com/rapgenius/The-Beatles...   \n",
       "stats                         {'hot': False, 'unreviewed_annotations': 0, 'p...   \n",
       "title                                                         A Day In the Life   \n",
       "url                           https://genius.com/The-beatles-a-day-in-the-li...   \n",
       "\n",
       "                                                                            5    \\\n",
       "_id                                                                      118166   \n",
       "annotation_count                                                             13   \n",
       "api_path                                                          /songs/118166   \n",
       "full_title                                    A Hard Day's Night by The Beatles   \n",
       "header_image_thumbnail_url    https://images.genius.com/68c11c7f5b6b66194d77...   \n",
       "header_image_url              https://images.genius.com/68c11c7f5b6b66194d77...   \n",
       "id                                                                       118166   \n",
       "lyrics_owner_id                                                            1553   \n",
       "path                                      /The-beatles-a-hard-days-night-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                  4   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/68c11c7f5b6b66194d77...   \n",
       "stats                         {'hot': False, 'unreviewed_annotations': 0, 'p...   \n",
       "title                                                        A Hard Day's Night   \n",
       "url                           https://genius.com/The-beatles-a-hard-days-nig...   \n",
       "\n",
       "                                                                            6    \\\n",
       "_id                                                                      210540   \n",
       "annotation_count                                                              0   \n",
       "api_path                                                          /songs/210540   \n",
       "full_title                                       Ain't She Sweet by The Beatles   \n",
       "header_image_thumbnail_url          https://s3.amazonaws.com/rapgenius/view.jpg   \n",
       "header_image_url                    https://s3.amazonaws.com/rapgenius/view.jpg   \n",
       "id                                                                       210540   \n",
       "lyrics_owner_id                                                          250962   \n",
       "path                                         /The-beatles-aint-she-sweet-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                NaN   \n",
       "song_art_image_thumbnail_url        https://s3.amazonaws.com/rapgenius/view.jpg   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                                           Ain't She Sweet   \n",
       "url                           https://genius.com/The-beatles-aint-she-sweet-...   \n",
       "\n",
       "                                                                            7    \\\n",
       "_id                                                                      210315   \n",
       "annotation_count                                                              1   \n",
       "api_path                                                          /songs/210315   \n",
       "full_title                    A Little Rhyme by The Beatles (Ft. John & Rodn...   \n",
       "header_image_thumbnail_url    https://s3.amazonaws.com/rapgenius/110537_cda_...   \n",
       "header_image_url              https://s3.amazonaws.com/rapgenius/110537_cda_...   \n",
       "id                                                                       210315   \n",
       "lyrics_owner_id                                                          250962   \n",
       "path                                         /The-beatles-a-little-rhyme-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                NaN   \n",
       "song_art_image_thumbnail_url  https://s3.amazonaws.com/rapgenius/110537_cda_...   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                                            A Little Rhyme   \n",
       "url                           https://genius.com/The-beatles-a-little-rhyme-...   \n",
       "\n",
       "                                                                            8    \\\n",
       "_id                                                                      123414   \n",
       "annotation_count                                                              1   \n",
       "api_path                                                          /songs/123414   \n",
       "full_title                                    All I've Got to Do by The Beatles   \n",
       "header_image_thumbnail_url      https://s3.amazonaws.com/rapgenius/Beatles2.jpg   \n",
       "header_image_url                https://s3.amazonaws.com/rapgenius/Beatles2.jpg   \n",
       "id                                                                       123414   \n",
       "lyrics_owner_id                                                           22533   \n",
       "path                                      /The-beatles-all-ive-got-to-do-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                  1   \n",
       "song_art_image_thumbnail_url    https://s3.amazonaws.com/rapgenius/Beatles2.jpg   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                                        All I've Got to Do   \n",
       "url                           https://genius.com/The-beatles-all-ive-got-to-...   \n",
       "\n",
       "                                                                            9    \\\n",
       "_id                                                                      123415   \n",
       "annotation_count                                                              4   \n",
       "api_path                                                          /songs/123415   \n",
       "full_title                                         All My Loving by The Beatles   \n",
       "header_image_thumbnail_url      https://s3.amazonaws.com/rapgenius/Beatles2.jpg   \n",
       "header_image_url                https://s3.amazonaws.com/rapgenius/Beatles2.jpg   \n",
       "id                                                                       123415   \n",
       "lyrics_owner_id                                                           22533   \n",
       "path                                          /The-beatles-all-my-loving-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                  4   \n",
       "song_art_image_thumbnail_url    https://s3.amazonaws.com/rapgenius/Beatles2.jpg   \n",
       "stats                         {'hot': False, 'unreviewed_annotations': 0, 'p...   \n",
       "title                                                             All My Loving   \n",
       "url                           https://genius.com/The-beatles-all-my-loving-l...   \n",
       "\n",
       "                                                    ...                          \\\n",
       "_id                                                 ...                           \n",
       "annotation_count                                    ...                           \n",
       "api_path                                            ...                           \n",
       "full_title                                          ...                           \n",
       "header_image_thumbnail_url                          ...                           \n",
       "header_image_url                                    ...                           \n",
       "id                                                  ...                           \n",
       "lyrics_owner_id                                     ...                           \n",
       "path                                                ...                           \n",
       "primary_artist                                      ...                           \n",
       "pyongs_count                                        ...                           \n",
       "song_art_image_thumbnail_url                        ...                           \n",
       "stats                                               ...                           \n",
       "title                                               ...                           \n",
       "url                                                 ...                           \n",
       "\n",
       "                                                                            601  \\\n",
       "_id                                                                     2853637   \n",
       "annotation_count                                                              0   \n",
       "api_path                                                         /songs/2853637   \n",
       "full_title                                     Where Bluebirds Fly by Radiohead   \n",
       "header_image_thumbnail_url    https://images.genius.com/8ae50c3392a15c9c558c...   \n",
       "header_image_url              https://images.genius.com/8ae50c3392a15c9c558c...   \n",
       "id                                                                      2853637   \n",
       "lyrics_owner_id                                                         2726776   \n",
       "path                                      /Radiohead-where-bluebirds-fly-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                NaN   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/8ae50c3392a15c9c558c...   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                                       Where Bluebirds Fly   \n",
       "url                           https://genius.com/Radiohead-where-bluebirds-f...   \n",
       "\n",
       "                                                                            602  \\\n",
       "_id                                                                      115809   \n",
       "annotation_count                                                              7   \n",
       "api_path                                                          /songs/115809   \n",
       "full_title                               Where I End and You Begin by Radiohead   \n",
       "header_image_thumbnail_url    https://images.genius.com/5ccb8a89b0f674962982...   \n",
       "header_image_url              https://images.genius.com/5ccb8a89b0f674962982...   \n",
       "id                                                                       115809   \n",
       "lyrics_owner_id                                                         2726776   \n",
       "path                                /Radiohead-where-i-end-and-you-begin-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                  5   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/5ccb8a89b0f674962982...   \n",
       "stats                         {'hot': False, 'unreviewed_annotations': 2, 'p...   \n",
       "title                                                 Where I End and You Begin   \n",
       "url                           https://genius.com/Radiohead-where-i-end-and-y...   \n",
       "\n",
       "                                                                            603  \\\n",
       "_id                                                                     1205907   \n",
       "annotation_count                                                              1   \n",
       "api_path                                                         /songs/1205907   \n",
       "full_title                                            Wicked Child by Radiohead   \n",
       "header_image_thumbnail_url    https://images.genius.com/25efaa8c220fdcfec8a9...   \n",
       "header_image_url              https://images.genius.com/25efaa8c220fdcfec8a9...   \n",
       "id                                                                      1205907   \n",
       "lyrics_owner_id                                                         1549345   \n",
       "path                                             /Radiohead-wicked-child-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                NaN   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/25efaa8c220fdcfec8a9...   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                                              Wicked Child   \n",
       "url                            https://genius.com/Radiohead-wicked-child-lyrics   \n",
       "\n",
       "                                                                            604  \\\n",
       "_id                                                                     1383236   \n",
       "annotation_count                                                              1   \n",
       "api_path                                                         /songs/1383236   \n",
       "full_title                                      Wish You Were Here by Radiohead   \n",
       "header_image_thumbnail_url    https://images.genius.com/25efaa8c220fdcfec8a9...   \n",
       "header_image_url              https://images.genius.com/25efaa8c220fdcfec8a9...   \n",
       "id                                                                      1383236   \n",
       "lyrics_owner_id                                                         1549345   \n",
       "path                                       /Radiohead-wish-you-were-here-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                NaN   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/25efaa8c220fdcfec8a9...   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                                        Wish You Were Here   \n",
       "url                           https://genius.com/Radiohead-wish-you-were-her...   \n",
       "\n",
       "                                                                            605  \\\n",
       "_id                                                                     1081664   \n",
       "annotation_count                                                              1   \n",
       "api_path                                                         /songs/1081664   \n",
       "full_title                                              Wonderwall by Radiohead   \n",
       "header_image_thumbnail_url    https://images.genius.com/25efaa8c220fdcfec8a9...   \n",
       "header_image_url              https://images.genius.com/25efaa8c220fdcfec8a9...   \n",
       "id                                                                      1081664   \n",
       "lyrics_owner_id                                                         1549345   \n",
       "path                                               /Radiohead-wonderwall-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                NaN   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/25efaa8c220fdcfec8a9...   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                                                Wonderwall   \n",
       "url                              https://genius.com/Radiohead-wonderwall-lyrics   \n",
       "\n",
       "                                                                            606  \\\n",
       "_id                                                                      350065   \n",
       "annotation_count                                                             12   \n",
       "api_path                                                          /songs/350065   \n",
       "full_title                                               Worrywort by Radiohead   \n",
       "header_image_thumbnail_url    https://images.genius.com/e4bdb3ab980f0f1b6ce4...   \n",
       "header_image_url              https://images.genius.com/e4bdb3ab980f0f1b6ce4...   \n",
       "id                                                                       350065   \n",
       "lyrics_owner_id                                                          428027   \n",
       "path                                                /Radiohead-worrywort-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                NaN   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/e4bdb3ab980f0f1b6ce4...   \n",
       "stats                              {'hot': False, 'unreviewed_annotations': 11}   \n",
       "title                                                                 Worrywort   \n",
       "url                               https://genius.com/Radiohead-worrywort-lyrics   \n",
       "\n",
       "                                                                            607  \\\n",
       "_id                                                                     1226422   \n",
       "annotation_count                                                              1   \n",
       "api_path                                                         /songs/1226422   \n",
       "full_title                                                Yes I Am by Radiohead   \n",
       "header_image_thumbnail_url    https://images.genius.com/6b45ffa7fd55970e6411...   \n",
       "header_image_url              https://images.genius.com/6b45ffa7fd55970e6411...   \n",
       "id                                                                      1226422   \n",
       "lyrics_owner_id                                                         1549345   \n",
       "path                                                 /Radiohead-yes-i-am-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                  2   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/6b45ffa7fd55970e6411...   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}   \n",
       "title                                                                  Yes I Am   \n",
       "url                                https://genius.com/Radiohead-yes-i-am-lyrics   \n",
       "\n",
       "                                                                            608  \\\n",
       "_id                                                                       98114   \n",
       "annotation_count                                                              6   \n",
       "api_path                                                           /songs/98114   \n",
       "full_title                                                     You by Radiohead   \n",
       "header_image_thumbnail_url    https://images.genius.com/6c0cb1c55fc88c941dac...   \n",
       "header_image_url              https://images.genius.com/6c0cb1c55fc88c941dac...   \n",
       "id                                                                        98114   \n",
       "lyrics_owner_id                                                          116170   \n",
       "path                                                      /Radiohead-you-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                  1   \n",
       "song_art_image_thumbnail_url  https://images.genius.com/6c0cb1c55fc88c941dac...   \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 1}   \n",
       "title                                                                       You   \n",
       "url                                     https://genius.com/Radiohead-you-lyrics   \n",
       "\n",
       "                                                                            609  \\\n",
       "_id                                                                      114477   \n",
       "annotation_count                                                              4   \n",
       "api_path                                                          /songs/114477   \n",
       "full_title                                     You and Whose Army? by Radiohead   \n",
       "header_image_thumbnail_url    https://s3.amazonaws.com/rapgenius/1359924238_...   \n",
       "header_image_url              https://s3.amazonaws.com/rapgenius/1359924238_...   \n",
       "id                                                                       114477   \n",
       "lyrics_owner_id                                                          116340   \n",
       "path                                       /Radiohead-you-and-whose-army-lyrics   \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...   \n",
       "pyongs_count                                                                  4   \n",
       "song_art_image_thumbnail_url  https://s3.amazonaws.com/rapgenius/1359924238_...   \n",
       "stats                         {'hot': False, 'unreviewed_annotations': 0, 'p...   \n",
       "title                                                       You and Whose Army?   \n",
       "url                           https://genius.com/Radiohead-you-and-whose-arm...   \n",
       "\n",
       "                                                                            610  \n",
       "_id                                                                      642622  \n",
       "annotation_count                                                              1  \n",
       "api_path                                                          /songs/642622  \n",
       "full_title                        You Never Wash Up After Yourself by Radiohead  \n",
       "header_image_thumbnail_url    https://images.rapgenius.com/0d14d86aec456da16...  \n",
       "header_image_url              https://images.rapgenius.com/0d14d86aec456da16...  \n",
       "id                                                                       642622  \n",
       "lyrics_owner_id                                                         1158811  \n",
       "path                          /Radiohead-you-never-wash-up-after-yourself-ly...  \n",
       "primary_artist                {'is_meme_verified': False, 'header_image_url'...  \n",
       "pyongs_count                                                                NaN  \n",
       "song_art_image_thumbnail_url  https://images.rapgenius.com/0d14d86aec456da16...  \n",
       "stats                               {'hot': False, 'unreviewed_annotations': 0}  \n",
       "title                                          You Never Wash Up After Yourself  \n",
       "url                           https://genius.com/Radiohead-you-never-wash-up...  \n",
       "\n",
       "[15 rows x 611 columns]"
      ]
     },
     "execution_count": 68,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "gsongs = pd.DataFrame(list(genius_tracks.find()))\n",
    "gsongs.T"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Now we can get the lyrics for each song. We tidy it up as we go, to strip out formatting and the like.\n",
    "\n",
    "Note the use of [Beautiful Soup](https://www.crummy.com/software/BeautifulSoup/bs4/doc/) to strip out the HTML from the lyrics."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 42,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "def genius_lyrics(song_url):\n",
    "    headers = {'Accept': 'application/json',\n",
    "               'Authorization': 'Bearer ' + config['genius']['token'],\n",
    "               'User-Agent': 'curl/7.9.8 (i686-pc-linux-gnu) libcurl 7.9.8 (OpenSSL 0.9.6b) (ipv6 enabled)'}\n",
    "    request = urllib.request.Request(song_url, headers=headers, method='GET')\n",
    "    html_doc = urllib.request.urlopen(request)\n",
    "    soup = BeautifulSoup(html_doc, 'html.parser')\n",
    "    lyrics = soup.find('lyrics').get_text()\n",
    "    l2 = re.sub('\\[[^\\]]*\\]', '', lyrics)\n",
    "    l3 = re.sub('\\[|\\]', '', l2)\n",
    "    l4 = re.sub('(\\s)+', ' ', l3)\n",
    "    return l4.strip().lower(), lyrics"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 70,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(\"oh ain't she sweet well see her walking down that street yes i ask you very confidentially ain't she sweet? oh ain't she nice well look her over once or twice yes i ask you very confidentially ain't she nice? just cast an eye in her direction oh me oh my ain't that perfection? oh i repeat well don't you think that's kind of neat? yes i ask you very confidentially ain't she sweet? oh ain't she sweet well see her walking down that street well i ask you very confidentially ain't she sweet? well i ask you very confidentially ain't she sweet?\",\n",
       " \"\\n\\n[Chorus 1]]\\nOh ain't she sweet\\nWell see her walking down that street\\nYes I ask you very confidentially\\nAin't she sweet?\\n\\n[Chorus 2]\\nOh ain't she nice\\nWell look her over once or twice\\nYes I ask you very confidentially\\nAin't she nice?\\n\\n[Chorus 3]\\nJust cast an eye\\nIn her direction\\nOh me oh my\\nAin't that perfection?\\n\\n[Chorus 4]\\nOh I repeat\\nWell don't you think that's kind of neat?\\nYes I ask you very confidentially\\nAin't she sweet?\\n\\n[Chorus 1]\\n\\n[Chorus 2]\\n\\n[Chorus 3]\\n\\n[Chorus 4]\\n\\n[Chorus 1]\\nOh ain't she sweet\\nWell see her walking down that street\\nWell I ask you very confidentially\\nAin't she sweet?\\nWell I ask you very confidentially\\nAin't she sweet?\\n\\n\")"
      ]
     },
     "execution_count": 70,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "assl = genius_lyrics('https://genius.com/The-beatles-aint-she-sweet-lyrics')\n",
    "assl"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 45,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'_id': 1497768,\n",
       " 'lyrics': 'when i was sitting on my piano one day a magical thought came my way to write a number for the bbc kenny everett mccartney all together on the wireless machine kenny everett mccartney all together on the wireless machine kenny everett mccartney all together on the wireless machine',\n",
       " 'original_lyrics': '\\n\\nWhen I was sitting on my piano one day\\nA magical thought came my way\\nTo write a number for the BBC\\nKenny Everett McCartney\\nAll together on the wireless machine\\nKenny Everett McCartney\\nAll together on the wireless machine\\nKenny Everett McCartney\\nAll together on the wireless machine\\n\\n',\n",
       " 'title': 'All Together on the Wireless Machine'}"
      ]
     },
     "execution_count": 45,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "for gsong in genius_tracks.find():\n",
    "    if 'lyrics' not in gsong:\n",
    "        lyrics, original_lyrics = genius_lyrics(gsong['url'])\n",
    "        genius_tracks.update_one({'_id': gsong['_id']}, \n",
    "                                 {'$set': {'lyrics': lyrics, 'original_lyrics': original_lyrics}})\n",
    "genius_tracks.find_one({}, ['title', 'lyrics', 'original_lyrics'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 56,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'original_lyrics_text'"
      ]
     },
     "execution_count": 56,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "genius_tracks.create_index([('original_lyrics', pymongo.TEXT)])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 59,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[\"\\n\\nClaudine's back in jail again\\nClaudine's back in jail (again)\\nClaudine's back in jail again\\nClaudine\\n\\nClaudine's back in jail again\\nClaudine's back in jail (again)\\nShe only does it at weekends\\nClaudine\\nOh, Claudine\\n\\nNow only Spider knows for sure\\nBut he ain't talkin' about it any more\\nIs he, Claudine?\\n\\nThere's blood in the chalet\\nAnd blood in the snow\\n(She)Washed her hands of the whole damn show\\nThe best thing you could do, Claudine\\n\\nShot him once right through the head\\nShot him twice right through the chest\\nThe judge says (ruled) it was an accident\\nClaudine\\nAccidents will happen\\n(In the best homes)\\n\\nAnd Claudine's back in jail again\\nClaudine's back in jail again\\nClaudine's back in jail again\\nClaudine\\n\\n(Claudine's back in jail again\\nClaudine's back in jail again\\nClaudine's back in jail again\\n\\nClaudine) (additional chorus)\\nI'll tell you something\\nNow Claudine's back in jail again\\nClaudine's back in jail again\\nClaudine's back in jail again\\nClaudine\\n\\nTell you one more\\n\\nClaudine's back in jail again\\nClaudine's back in jail again\\nClaudine's back in jail again\\nHuh Claudine?\\n\\nOh Claudine...\\n\\nOooo ...\\nWhat about the children, baby?\\nPoor, poor children\\n\\nNow I threaten my wife with a gun\\nI always leave the safety on\\nI recommend it\\nClaudine\\n\\nNow she pistol whipped me once or twice\\nBut she never tried to take my life\\n(What do you think about that)\\nClaudine\\n\\nThe prettiest girl I ever seen\\nI saw you on the movie screen\\nHope you don't try to make a sacrifice of me\\nClaudine\\n(Don't get trigger happy with me)\\nDon't wave a gun at me\\n(Claudine)\\n\\nI said Claudine's back in jail again\\nClaudine's back in jail again\\nClaudine's back in jail again\\nClaudine\\n\\nI said Claudine's back in jail again\\nClaudine's back in jail again\\nShe only does it at weekends\\nClaudine\\n\\nKeith, will you put that weapon down?\\n\\nOh Claudine\\n\\nOh Claudine\\n\\n\",\n",
       " \"\\n\\n[Verse 1]\\nI'm not talking about the kind of clothes she wears\\nLook at that stupid girl\\nI'm not talking about the way she combs her hair\\nLook at that stupid girl\\n\\nThe way she powders her nose\\nHer vanity shows and it shows\\nShe's the worst thing in this world\\nWell, look at that stupid girl\\n\\n[Verse 2]\\nI'm not talking about the way she digs for gold\\nLook at that stupid girl\\nWell, I'm talking about the way she grabs and holds\\nLook at that stupid girl\\n\\nThe way she talks about someone else\\nThat she don't even know herself\\nShe's the sickest thing in this world\\nWell, look at that stupid girl\\n\\n[Chorus]\\nWell, I'm sick and tired and I really have my doubts\\nI've tried and tried, but it never really works out\\n\\n[Verse 3]\\nLike a lady-in-waiting to a virgin queen\\nLook at that stupid girl\\nShe bitches about things that she's never seen\\nLook at that stupid girl\\n\\nIt doesn't matter if she dyes her hair\\nOr the color of the shoes she wears\\nShe's the worst thing in this world\\nWell, look at that stupid girl\\n\\n[Guitar Break]\\n\\n[Verse 4]\\nLike a lady-in-waiting to a virgin queen\\nLook at that stupid girl\\nShe bitches about things that she's never seen\\nLook at that stupid girl\\n\\nAnd she purrs like a pussycat\\nThen she turns around and hisses back\\nShe's the sickest thing in this world\\nLook at that stupid girl\\n\\n\",\n",
       " \"\\n\\n[Verse 1]\\nWent out walking through the wood the other day\\nAnd the world was a carpet laid before me\\nThe buds were bursting and the air smelled sweet and strange\\nAnd it seemed about a hundred years ago\\nMary and I, we would sit upon a gate\\nJust gazing at some dragon in the sky\\nWhat tender days, we had no secrets hid away\\nWell, it seemed about a hundred years ago\\nNow all my friends are wearing worried smiles\\nLiving out a dream of what they was\\nDon't you think it's sometimes wise not to grow up?\\nWend out walking through the wood the other day\\nCan't you see the furrows in my forehead?\\nWhat tender days, we had no secrets hid away\\nNow it seems about a hundred years ago\\nNow if you see me drinking bad red wine\\nDon't worry 'bout this man that you love\\nDon't you think it's sometimes wise not to grow up?\\n\\n[Chorus]\\nYou're going to kiss and say good-bye, yeah, I warn you[x2]\\nYou're going to kiss and say good-bye, oh Lord, I warn you\\n\\n[Verse 2]\\nAnd please excuse me while I hide away\\nCall me lazy bones\\nIsn’t got no time to waste away\\nLazy bones has not got no time to waste away\\nDon't you think it's just about time to hide away? Yeah, yeah!\\n\\n\",\n",
       " \"\\n\\n[Instrument break]\\n[Verse 1]\\nI don't like you\\nBut I love you\\nSeems that I'm always\\nThinking of you\\nOh, oh, oh\\nYou treat me badly\\nI love you madly\\nYou've really got a hold on me\\nYou've really got a hold on me, baby\\n\\n[Verse 2]\\nI don't want you\\nBut I need you\\nDon't want to kiss you\\nBut I need to\\nOh, oh, oh\\nYou do me wrong now\\nMy love is strong now\\nYou've really got a hold on me\\nYou've really got a hold on me, baby\\n\\n[Chorus]\\nI love you and all I want you to do\\nIs just hold me, hold me, hold me, hold me\\nTied up\\nTied up\\n\\n[Verse 3]\\nI want to leave you\\nDon't want to stay here\\nDon't want to spend\\nAnother day here\\nOh, oh, oh, I want to split now\\nI just can quit now\\nYou've really got a hold on me\\nYou've really got a hold on me, baby\\n\\nI love you and all I want you to do\\nIs just hold me, hold me, hold me, hold me\\n\\n[Outro]\\nYou've really got a hold on me\\nYou've really got a hold on me\\n\\n\",\n",
       " \"\\n\\n[Verse 1]\\nThe best things in life are free\\nBut you can keep them for the birds and bees\\nNow give me money\\nThat's what I want\\nThat's what I want, yeah\\nThat's what I want\\n\\nYour loving gives me a thrill\\nBut your loving don't pay my bills\\nNow give me money\\nThat's what I want\\nThat's what I want, yeah\\nThat's what I want\\n\\n[Chorus] [x2]\\nMoney don't get everything it's true\\nWhat it don't get, I can't use\\nNow give me money\\nThat's what I want\\nThat's what I want, yeah\\nThat's what I want, wah\\n\\n[Verse 2]\\nWell now give me money\\nA lot of money\\nWow, yeah, I want to be free\\nOh I want money\\nThat's what I want\\nThat's what I want, well\\nNow give me money\\nA lot of money\\nWow, yeah, you need money\\nNow, give me money\\nThat's what I want, yeah\\nThat's what I want\\n\\n\",\n",
       " '\\n\\n[Intro]\\nI say hey, Mona\\nOh, Mona\\nI say yeah, yeah, yeah, yeah, Mona\\nOh, Mona\\n\\n[Chorus][x2]\\nI tell you Mona what I want to do\\nI will build a house next door to you\\nCan I see you sometimes?\\nWe can blow kisses through the blinds\\nYeah can I out come out on the front\\nAnd listen to my heart go bumped bump\\nI need you baby that is no lie\\nWithout your love I would surely die\\nI say hey, Mona\\nOh, Mona\\nI say yeah, yeah, yeah, yeah, Mona\\nOh, Mona\\nI say hey, hey Mona\\nOh, Mona\\nI say yeah, yeah, yeah, yeah, Mona\\nOh, Mona\\n\\n',\n",
       " \"\\n\\n[Verse 1]\\nNow, if you want to hear some boogie like I am going to play\\nIt is just an old piano and a knockout bass\\nThe drummer's man's a cat, they call Charlie McCoy\\nYou know, remember that rubber legged boy?\\nMama, cooking chicken fried and bacon grease\\nCome on along boys, it is just down the road apiece\\n\\n[Chorus][x2]\\nWell there is a place you really get your kicks\\nIt is open every night about twelve to six\\nNow if you want to hear some boogie you can get your fill\\nAnd shove and sting like an old steam drill\\nCome on along you can lose your lead\\nDown the road, down the road, down the road apiece\\n\\n\",\n",
       " \"\\n\\n[Verse 1]\\nSun turnin' 'round with graceful motion\\nWe're setting off with soft explosion\\nBound for a star with fiery oceans\\nIt's so very lonely, you're a hundred light years from home\\nFreezing red deserts turn to dark\\nEnergy here in every part\\nIt's so very lonely, you're six hundred light years from home\\n\\n[Chorus][x2]\\nIt's so very lonely, you're a thousand light years from home\\n\\n[Verse 2]\\nBell flight fourteen you now can land\\nSee you on Aldebaran, safe on the green desert sand\\nIt's so very lonely, you're two thousand light years from home\\nIt's so very lonely, you're two thousand light years from home\\n\\n\",\n",
       " '\\n\\n[Intro]\\nWell if you ever plan to motor west\\nJust take my way that is the highway that is the best\\n\\n[Verse]\\nGet your kicks on Route 66\\nWell it winds from Chicago to L.A\\nMore than 2000 miles all the way\\nGet your kicks on Route 66\\n\\n[Chorus][x2]\\nWell goes from St. Louie down to Missouri\\nOklahoma city looks oh so pretty\\nYou will see Amarillo and Gallup, New Mexico\\nFlagstaff, Arizona do not forget Winona\\nKingman, Barstow, San Bernardino\\nWould you get hip to this kindly tip\\nAnd go take that California trip\\nGet your kicks on Route 66\\n\\n',\n",
       " \"\\n\\nWell, they tell me of a pie up in the sky\\nWaiting for me when I die\\nBut between the day you're born and when you die\\nYou know, they never seem to hear even your cry\\n\\nChorus:\\nSo as sure as the sun will shine\\nI'm gonna get my share now what is mine\\nAnd then the harder they come\\nThe harder they fall\\nOne and all\\nThe harder they come\\nThe harder they fall\\nOne and all\\n\\nAnd the oppressors are trying to track me down\\nThey're trying to drive me underground\\nAnd they think that they have got the battle won\\nI say, forgive them Lord, they know not what they've done\\n\\nAnd I keep on fighting for the things I want\\nThough I know that when you're dead you can't\\nBut I'd rather be a free man in my grave\\nThan living as a puppet or a slave\\n\\n\"]"
      ]
     },
     "execution_count": 59,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "[t['original_lyrics'] for t in genius_tracks.find({'$text': {'$search': 'chorus'}}, limit=10)]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Matching datasets<a name=\"matchingdatasets\"></a>\n",
    "Now it's time to match up the datasets. First, we simplify the titles of the tracks, to sidestep differences in punctuation, capitalisation, and the like.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 46,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "def canonical_name(text):\n",
    "    t1 = re.sub(' - .*', '', text) # Strip the \" - Remastered 2015\" suffix\n",
    "    t2 = re.sub('[^\\w\\s]', '', t1) # strip all characters except letters, numbers, and whitespace\n",
    "    t3 = re.sub('\\s+', ' ', t2) # collapse whitespace\n",
    "    return t3.lower() # convert to lowercase and return"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 47,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'a hard days night'"
      ]
     },
     "execution_count": 47,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "canonical_name(\"A Hard Day's Night - Live / Remastered\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Add the simplified title to each track in the Spotify and Genius collections."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 48,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "for t in tracks.find():\n",
    "    tracks.update_one({'_id': t['_id']}, {'$set': {'ctitle': canonical_name(t['name'])}})\n",
    "for t in genius_tracks.find():\n",
    "    genius_tracks.update_one({'_id': t['_id']}, {'$set': {'ctitle': canonical_name(t['title'])}})"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Now to see what the differences are. Find the tracks that are in both collections, and tracks that are in only one."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 49,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(489, 559, 57)"
      ]
     },
     "execution_count": 49,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "in_both = set(g['ctitle'] for g in genius_tracks.find({}, ['ctitle']) if tracks.find({'ctitle': g['ctitle']}).count())\n",
    "genius_only = set(g['ctitle'] for g in genius_tracks.find({}, ['ctitle']) if not tracks.find({'ctitle': g['ctitle']}).count())\n",
    "spotify_only = set(s['ctitle'] for s in tracks.find({}, ['ctitle']) if not genius_tracks.find({'ctitle': s['ctitle']}).count())\n",
    "len(in_both), len(genius_only), len(spotify_only)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 50,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'2 2 5 live at earls court',\n",
       " 'a punch up at a wedding',\n",
       " 'band introductions',\n",
       " 'bloom blawan rmx',\n",
       " 'bloom harmonic 313 rmx',\n",
       " 'bloom jamie xx rework',\n",
       " 'bloom mark pritchard rmx',\n",
       " 'bloom objekt rmx',\n",
       " 'bullet proof i wish i was',\n",
       " 'charlies intro to little red rooster',\n",
       " 'codex illum sphere',\n",
       " 'dollars cents',\n",
       " 'dollars cents live',\n",
       " 'everybody needs somebody to love finale',\n",
       " 'everything in its right place live in france',\n",
       " 'faraway eyes',\n",
       " 'feral lone rmx',\n",
       " 'fog again live',\n",
       " 'give up the ghost brokenchord rmx',\n",
       " 'give up the ghost thriller houseghost remix',\n",
       " 'good evening mrs magpie modeselektor rmx',\n",
       " 'i might be wrong live',\n",
       " 'i will los angeles version',\n",
       " 'idioteque live in oxford',\n",
       " 'intro take the a train',\n",
       " 'jumping jack flash',\n",
       " 'just my imagination',\n",
       " 'kansas city heyheyheyhey',\n",
       " 'key to the highway',\n",
       " 'like spinning plates live',\n",
       " 'little by little caribou rmx',\n",
       " 'little by little shed',\n",
       " 'little ta',\n",
       " 'lotus flower jacques greene rmx',\n",
       " 'lotus flower sbtrkt rmx',\n",
       " 'march of the meanies',\n",
       " 'martin scorsese intro',\n",
       " 'morning bell live in oxford',\n",
       " 'morning mr magpie nathan fake rmx',\n",
       " 'morning mr magpie pearson sound scavenger rmx',\n",
       " 'outro',\n",
       " 'packt like sardines in a crushed tin box',\n",
       " 'pepperland',\n",
       " 'pepperland laid waste',\n",
       " 'remyxomatosis cristian vogel rmx',\n",
       " 'revolution 1',\n",
       " 'sea of holes',\n",
       " 'sea of monsters',\n",
       " 'sea of time',\n",
       " 'separator anstam rmx',\n",
       " 'separator four tet rmx',\n",
       " 'skttrbrain four tet remix',\n",
       " 'the national anthem live in france',\n",
       " 'tkol altrice rmx',\n",
       " 'true love waits live in oslo',\n",
       " 'untitled',\n",
       " 'when im sixty four'}"
      ]
     },
     "execution_count": 50,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "spotify_only"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 51,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'100 years ago',\n",
       " '1822',\n",
       " '19th nervous breakdown',\n",
       " '2000 light years from home',\n",
       " '2000 man',\n",
       " '2120 south michigan avenue',\n",
       " '3',\n",
       " 'a little rhyme',\n",
       " 'a moon shaped pool tracklist album cover',\n",
       " 'a picture of you',\n",
       " 'a punchup at a wedding',\n",
       " 'a reminder',\n",
       " 'a shot of rhythm and blues',\n",
       " 'across the universe wildlife version',\n",
       " 'aint she sweet',\n",
       " 'aint that loving you baby',\n",
       " 'aint too proud to beg',\n",
       " 'all sold out',\n",
       " 'all things must pass',\n",
       " 'all together on the wireless machine',\n",
       " 'andrews blues',\n",
       " 'another beatles christmas record',\n",
       " 'anyway you look at it',\n",
       " 'around and around',\n",
       " 'baby please dont go',\n",
       " 'baby whats wrong',\n",
       " 'backstreet girl',\n",
       " 'bad boy',\n",
       " 'bad to me',\n",
       " 'banana co',\n",
       " 'beatle greetings',\n",
       " 'beatles movie medley',\n",
       " 'beautiful delilah',\n",
       " 'beautiful dreamer',\n",
       " 'bebopalula',\n",
       " 'because i know you love me so',\n",
       " 'being for the benefit of mr kite take 7',\n",
       " 'being for the benefit of mr kite takes 1 2',\n",
       " 'being for the benefit of mr kitei want you shes so heavyhelter skelter',\n",
       " 'besame mucho',\n",
       " 'big boots',\n",
       " 'big ideas',\n",
       " 'bishops robes',\n",
       " 'bitch',\n",
       " 'bitches talkin',\n",
       " 'blackbirdyesterday',\n",
       " 'blood red wine',\n",
       " 'blue moon of kentucky',\n",
       " 'blue suede shoes',\n",
       " 'blue turns to grey',\n",
       " 'bright lights big city',\n",
       " 'bullet proofi wish i was',\n",
       " 'burning bush',\n",
       " 'bye bye johnny',\n",
       " 'can i get a witness',\n",
       " 'can you hear the music',\n",
       " 'can you take me back',\n",
       " 'cant get next to you',\n",
       " 'carol',\n",
       " 'casino boogie',\n",
       " 'ceremony',\n",
       " 'charlie watts introduction of marianne faithfull',\n",
       " 'cherry oh baby',\n",
       " 'child of nature',\n",
       " 'child of the moon',\n",
       " 'christmas time is here again',\n",
       " 'cinnamon girl',\n",
       " 'citadel',\n",
       " 'clarabella',\n",
       " 'climbing up a bloody great hill',\n",
       " 'cocksucker blues',\n",
       " 'coke babies',\n",
       " 'come and get it',\n",
       " 'come on',\n",
       " 'come togetherdear prudence',\n",
       " 'coming down again',\n",
       " 'commonwealth',\n",
       " 'complicated',\n",
       " 'con le mie lacrime',\n",
       " 'confessin the blues',\n",
       " 'congratulations',\n",
       " 'cook cook blues',\n",
       " 'cool calm and collected',\n",
       " 'cops and robbers',\n",
       " 'corinna',\n",
       " 'country honk',\n",
       " 'crackin up',\n",
       " 'crazy mama',\n",
       " 'crinsk dee night',\n",
       " 'criss cross man',\n",
       " 'crushed pearl',\n",
       " 'cry for a shadow',\n",
       " 'cry to me',\n",
       " 'crying waiting hoping',\n",
       " 'cut a hole',\n",
       " 'cuttooth',\n",
       " 'da doo ron ron',\n",
       " 'dance',\n",
       " 'dance little sister',\n",
       " 'dancing in the light',\n",
       " 'dancing with mr d',\n",
       " 'dandelion',\n",
       " 'dear doctor',\n",
       " 'dear wack',\n",
       " 'diddley daddy',\n",
       " 'dollars and cents',\n",
       " 'doncha bother me',\n",
       " 'dont ever change',\n",
       " 'dont let me down',\n",
       " 'dont lie to me',\n",
       " 'dont look back',\n",
       " 'dont stop',\n",
       " 'doo doo doo doo doo heartbreaker',\n",
       " 'doom and gloom',\n",
       " 'down home girl',\n",
       " 'down in eastern australia',\n",
       " 'down in the bottom',\n",
       " 'downtown suzie',\n",
       " 'dream baby',\n",
       " 'drift away',\n",
       " 'drive my carthe wordwhat youre doing',\n",
       " 'each and every day of the year',\n",
       " 'eds scary song',\n",
       " 'egyptian song',\n",
       " 'eleanor rigbyjulia transition',\n",
       " 'empty heart',\n",
       " 'everybody lies through their teeth',\n",
       " 'everyone needs someone to hate',\n",
       " 'everything is turning to gold',\n",
       " 'faithless the wonderboy',\n",
       " 'falling in love again',\n",
       " 'family',\n",
       " 'fancyman blues',\n",
       " 'fanny mae',\n",
       " 'fasttrack',\n",
       " 'final show',\n",
       " 'fingerprint file',\n",
       " 'flight 505',\n",
       " 'fog',\n",
       " 'follow me around',\n",
       " 'following the river',\n",
       " 'fool to cry',\n",
       " 'fortune teller',\n",
       " 'four guys',\n",
       " 'free as a bird',\n",
       " 'from fluff to you',\n",
       " 'from us to you',\n",
       " 'gangsters maul',\n",
       " 'get back aka no pakistanis',\n",
       " 'get off of my cloud',\n",
       " 'give it up',\n",
       " 'give peace a chance',\n",
       " 'glad all over',\n",
       " 'glass onion love remix',\n",
       " 'gnik nus',\n",
       " 'goin home',\n",
       " 'gomper',\n",
       " 'good time women',\n",
       " 'good times',\n",
       " 'good times bad times',\n",
       " 'goodbye',\n",
       " 'goodbye girl',\n",
       " 'gotta get away',\n",
       " 'grown up wrong',\n",
       " 'hallelujah i love her so',\n",
       " 'hand of fate',\n",
       " 'happy song',\n",
       " 'harlem shuffle ny mix',\n",
       " 'harry patch in memory of',\n",
       " 'have a banana',\n",
       " 'have a banana speech',\n",
       " 'have you seen your mother baby standing in the shadow',\n",
       " 'hear me lord harrison',\n",
       " 'heart of stone',\n",
       " 'heavys pizza',\n",
       " 'hello little girl',\n",
       " 'here comes the sunthe inner light transition',\n",
       " 'hey crawdaddy',\n",
       " 'hey negrita',\n",
       " 'hide your love',\n",
       " 'highway child',\n",
       " 'hiheel sneakers',\n",
       " 'hitch hike',\n",
       " 'honest i do',\n",
       " 'hoochie coochie man',\n",
       " 'hot stuff',\n",
       " 'hound dog',\n",
       " 'how can you be sure',\n",
       " 'how do you do it',\n",
       " 'how i made my millions',\n",
       " 'i aint superstitious',\n",
       " 'i am waiting',\n",
       " 'i call your name',\n",
       " 'i cant be satisfied',\n",
       " 'i cant help it',\n",
       " 'i dont know why',\n",
       " 'i dont know why aka dont know why i love you',\n",
       " 'i forgot to remember to forget',\n",
       " 'i froze up',\n",
       " 'i get a kick out of you',\n",
       " 'i got a woman',\n",
       " 'i got the blues',\n",
       " 'i got to find my baby',\n",
       " 'i just dont understand',\n",
       " 'i just want to make love to you',\n",
       " 'i just want to see his face',\n",
       " 'i need you baby mona',\n",
       " 'i promise',\n",
       " 'i think im going mad',\n",
       " 'i want none of this',\n",
       " 'i want to be loved',\n",
       " 'i want to know',\n",
       " 'id much rather be with the boys',\n",
       " 'if i was a dancer dance part 2',\n",
       " 'if you cant rock me',\n",
       " 'if you let me',\n",
       " 'if you love me baby',\n",
       " 'if you need me',\n",
       " 'if you really want to be my friend',\n",
       " 'if youve got trouble',\n",
       " 'ill be on my way',\n",
       " 'ill get you',\n",
       " 'ill wear it proudly',\n",
       " 'ill wind',\n",
       " 'im a king bee',\n",
       " 'im coming up',\n",
       " 'im down',\n",
       " 'im going down',\n",
       " 'im gonna drive',\n",
       " 'im gonna sit right down and cry over you',\n",
       " 'im not signifying',\n",
       " 'im talking about you',\n",
       " 'in another land',\n",
       " 'in spite of all the danger',\n",
       " 'india',\n",
       " 'india rubber',\n",
       " 'inside my head',\n",
       " 'intro',\n",
       " 'intro excerpt from fanfare for the common man',\n",
       " 'it hurts me too',\n",
       " 'it should be you',\n",
       " 'its all over now',\n",
       " 'its for you',\n",
       " 'its not easy',\n",
       " 'ive been loving you too long',\n",
       " 'james bond theme',\n",
       " 'jazz piano song',\n",
       " 'jerusalem',\n",
       " 'jigsaw puzzle',\n",
       " 'jingle bells',\n",
       " 'jiving sister fanny',\n",
       " 'john lennon vs bill oreilly',\n",
       " 'john wesley harding',\n",
       " 'johnny b goode',\n",
       " 'jump on top of me',\n",
       " 'junk',\n",
       " 'just a rumour',\n",
       " 'just a rumour speech',\n",
       " 'kansas city',\n",
       " 'keep strong',\n",
       " 'keep your hands off my baby',\n",
       " 'keith richards introduction of the who',\n",
       " 'keys to your love',\n",
       " 'kid a tracklist album cover',\n",
       " 'killer cars',\n",
       " 'komm gib mir deine hand',\n",
       " 'ladies and gentlemen the rolling stones',\n",
       " 'lady jane',\n",
       " 'ladytron',\n",
       " 'leave my kitten alone',\n",
       " 'lend me your comb',\n",
       " 'let it loose',\n",
       " 'let it rock',\n",
       " 'lets dance',\n",
       " 'lewis mistreated',\n",
       " 'lift',\n",
       " 'like dreamers do',\n",
       " 'linda lu',\n",
       " 'little queenie',\n",
       " 'little t a',\n",
       " 'lonesome tears in my eyes',\n",
       " 'long long while',\n",
       " 'look what youve done',\n",
       " 'looking tired',\n",
       " 'losing my touch',\n",
       " 'love',\n",
       " 'love of the loved',\n",
       " 'love these goon shows',\n",
       " 'lozenge of love',\n",
       " 'lucille',\n",
       " 'lull',\n",
       " 'luxury',\n",
       " 'mailman bring me no more blues',\n",
       " 'mannish boy',\n",
       " 'manowar',\n",
       " 'mantua',\n",
       " 'maquiladora',\n",
       " 'matchbox',\n",
       " 'medley kansas cityhey hey hey hey',\n",
       " 'medley rip it up shake rattle and roll blue suede shoes',\n",
       " 'meet me in the bottom',\n",
       " 'meeting in the aisle',\n",
       " 'melatonin',\n",
       " 'melody',\n",
       " 'memo from turner',\n",
       " 'memory motel',\n",
       " 'memphis',\n",
       " 'memphis tennessee',\n",
       " 'mercy mercy',\n",
       " 'mick jaggers and john lennons introduction of the dirty mac',\n",
       " 'mick jaggers introduction of rock roll circus',\n",
       " 'mick jaggers introduction to jethro tull',\n",
       " 'million dollar question',\n",
       " 'miss amanda jones',\n",
       " 'miss you dr dre remix 2002',\n",
       " 'missing links bootleg',\n",
       " 'molasses',\n",
       " 'mona',\n",
       " 'money',\n",
       " 'moonlight',\n",
       " 'moonlight bay',\n",
       " 'moonlight mile',\n",
       " 'mothers little helper',\n",
       " 'movie medley',\n",
       " 'mr b',\n",
       " 'my bonnie',\n",
       " 'my bonnie english intro',\n",
       " 'my bonnie german intro',\n",
       " 'my girl',\n",
       " 'my obsession',\n",
       " 'no expectations',\n",
       " 'no reply demo',\n",
       " 'nobody does it better',\n",
       " 'nobodys child',\n",
       " 'not guilty',\n",
       " 'nothin shakin',\n",
       " 'nothin shakin but the leaves on the trees',\n",
       " 'nothing from nothing',\n",
       " 'nothing touches me',\n",
       " 'oh baby we got a good thing goin',\n",
       " 'old brown shoe',\n",
       " 'on the beach',\n",
       " 'on with the show',\n",
       " 'one and one is two',\n",
       " 'one more shot',\n",
       " 'one more try',\n",
       " 'ooh my arms',\n",
       " 'ooh my arms speech',\n",
       " 'ooh my soul',\n",
       " 'open pick',\n",
       " 'out of time',\n",
       " 'packt like sardines in a crushd tin box',\n",
       " 'paint it blacker',\n",
       " 'palo alto',\n",
       " 'pantomime everywhere its christmas',\n",
       " 'parachute woman',\n",
       " 'pass the wine sophia loren',\n",
       " 'pay your dues',\n",
       " 'pearly',\n",
       " 'pedro the fisherman',\n",
       " 'permanent daylight',\n",
       " 'petrol gang',\n",
       " 'phillipa chicken',\n",
       " 'play with fire',\n",
       " 'please go home',\n",
       " 'plundered my soul',\n",
       " 'poison ivy',\n",
       " 'polyethylene parts 1 2',\n",
       " 'pop is dead',\n",
       " 'prodigal son',\n",
       " 'punchdrunk lovesick singalong',\n",
       " 'rain',\n",
       " 'rain fall down william remix',\n",
       " 'ready teddy',\n",
       " 'real love',\n",
       " 'reelin and rockin',\n",
       " 'reminiscing',\n",
       " 'revolution',\n",
       " 'revolution i',\n",
       " 'rhinestone cowboy',\n",
       " 'ride on baby',\n",
       " 'riding on a bus',\n",
       " 'rip it up medley',\n",
       " 'road runner',\n",
       " 'ruby baby',\n",
       " 'sad day',\n",
       " 'saints',\n",
       " 'saints when the saints go marching in',\n",
       " 'salt of the earth',\n",
       " 'searchin',\n",
       " 'september in the rain',\n",
       " 'set fire to that lot',\n",
       " 'set fire to that lot speech',\n",
       " 'sgt peppers lonely hearts club band band documentary multimedia',\n",
       " 'sgt peppers lonely hearts club band reprise',\n",
       " 'sha la la la la',\n",
       " 'shake rattle and roll',\n",
       " 'shake your hips',\n",
       " 'she said yeah',\n",
       " 'she smiled sweetly',\n",
       " 'shes a rainbow',\n",
       " 'short and curlies',\n",
       " 'shout',\n",
       " 'sie liebt dich',\n",
       " 'silver train',\n",
       " 'sing a song for you',\n",
       " 'sing this all together',\n",
       " 'sing this all together see what happens',\n",
       " 'sinking ship',\n",
       " 'sister morphine',\n",
       " 'sittin on a fence',\n",
       " 'sleepy city',\n",
       " 'slow down',\n",
       " 'so divine aladdin story',\n",
       " 'so how come no one loves me',\n",
       " 'soldier of love',\n",
       " 'some other guy',\n",
       " 'some things just stick in your mind',\n",
       " 'somebody else',\n",
       " 'someone else',\n",
       " 'something happened to me yesterday',\n",
       " 'something with blue jay way transition',\n",
       " 'somewhere',\n",
       " 'soul survivor',\n",
       " 'sour milk sea',\n",
       " 'spectre',\n",
       " 'staircase',\n",
       " 'stand by me',\n",
       " 'star star',\n",
       " 'stealing my heart',\n",
       " 'step inside love',\n",
       " 'step inside love los paranoias',\n",
       " 'still a fool',\n",
       " 'stoned',\n",
       " 'stop breaking down',\n",
       " 'stranger in my arms',\n",
       " 'strawberry fields forever take 1',\n",
       " 'strawberry fields forever take 7 edit piece',\n",
       " 'stray cat blues',\n",
       " 'stuck out all alone',\n",
       " 'stupid car',\n",
       " 'stupid girl',\n",
       " 'summertime blues',\n",
       " 'supercollider',\n",
       " 'sure to fall',\n",
       " 'sure to fall in love with you',\n",
       " 'surprise surprise',\n",
       " 'susie q',\n",
       " 'suzy parker',\n",
       " 'swanee river',\n",
       " 'sway',\n",
       " 'sweet black angel',\n",
       " 'sweet georgia brown',\n",
       " 'sweet little sixteen',\n",
       " 'sympathy for the devil fatboy slim remix',\n",
       " 'sympathy for the devil the neptunes remix',\n",
       " 'take good care of my baby',\n",
       " 'take it or leave it',\n",
       " 'talk show host',\n",
       " 'talkin about you',\n",
       " 'teddy boy',\n",
       " 'tell me',\n",
       " 'tell me baby how many times',\n",
       " 'tell me why ep',\n",
       " 'tell me youre coming back',\n",
       " 'thank you girl',\n",
       " 'that girl belongs to yesterday',\n",
       " 'that means a lot',\n",
       " 'thatll be the day',\n",
       " 'thats alright mama',\n",
       " 'the amazing sounds of orgy',\n",
       " 'the beatles 1968 christmas record',\n",
       " 'the beatles christmas record',\n",
       " 'the beatles seventh christmas record',\n",
       " 'the beatles third christmas record',\n",
       " 'the butcher',\n",
       " 'the daily mail',\n",
       " 'the fool on the hill demo',\n",
       " 'the fool on the hill take 4',\n",
       " 'the happy rishikesh song',\n",
       " 'the harder they come',\n",
       " 'the hippy hippy shake',\n",
       " 'the honeymoon song',\n",
       " 'the inner light',\n",
       " 'the lantern',\n",
       " 'the new generation',\n",
       " 'the rocky road to dublin',\n",
       " 'the sheik of araby',\n",
       " 'the singer not the song',\n",
       " 'the storm',\n",
       " 'the thief',\n",
       " 'the trickster',\n",
       " 'the under assistant west coast promotion man',\n",
       " 'these are my twisted words',\n",
       " 'think',\n",
       " 'this boy',\n",
       " 'three cool cats',\n",
       " 'through the lonely nights',\n",
       " 'till the next goodbye',\n",
       " 'time waits for no one',\n",
       " 'title 5',\n",
       " 'to be a brilliant light',\n",
       " 'to know her is to love her',\n",
       " 'too much monkey business',\n",
       " 'torn and frayed',\n",
       " 'transatlantic drawl',\n",
       " 'travellin man',\n",
       " 'try a little harder',\n",
       " 'turd on the run',\n",
       " 'under the board walk',\n",
       " 'union city blue',\n",
       " 'untogether',\n",
       " 'upside down',\n",
       " 'ventilator blues',\n",
       " 'wake up in the morning',\n",
       " 'walking the dog',\n",
       " 'walking through the sleepy city',\n",
       " 'watching rainbows',\n",
       " 'we are wasting time',\n",
       " 'we love you',\n",
       " 'we want the stones',\n",
       " 'were wastin time',\n",
       " 'what a shame',\n",
       " 'what goes on girl',\n",
       " 'what is it that you say',\n",
       " 'what is that you say',\n",
       " 'what to do',\n",
       " 'whatd i say',\n",
       " 'whats the new mary jane',\n",
       " 'when im sixtyfour',\n",
       " 'when the saints go marchin in',\n",
       " 'who am i',\n",
       " 'whos been sleeping here',\n",
       " 'whos driving your plane',\n",
       " 'why',\n",
       " 'wicked child',\n",
       " 'winter',\n",
       " 'wish i never met you',\n",
       " 'wish you were here',\n",
       " 'within you without youtomorrow never knows',\n",
       " 'wonderwall',\n",
       " 'words of love ep',\n",
       " 'worrywort',\n",
       " 'ya ya',\n",
       " 'yes i am',\n",
       " 'yes it is',\n",
       " 'yesterdays papers',\n",
       " 'you better move on',\n",
       " 'you can make it if you try',\n",
       " 'you cant catch me',\n",
       " 'you gotta move',\n",
       " 'you know my name',\n",
       " 'you know my name look up the number',\n",
       " 'you know what to do',\n",
       " 'you never wash up after yourself',\n",
       " 'youll be mine',\n",
       " 'young blood',\n",
       " 'youve got a hold on me',\n",
       " 'yove got to hide your love away'}"
      ]
     },
     "execution_count": 51,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "genius_only"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "collapsed": true
   },
   "source": [
    "Manually fix a couple of errors."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 52,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<pymongo.results.UpdateResult at 0x7fa6226370d8>"
      ]
     },
     "execution_count": 52,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "genius_tracks.update_many({'ctitle': 'revolution i'}, \n",
    "                          {'$set': {'ctitle': 'revolution 1'}})\n",
    "genius_tracks.update_many({'ctitle': 'when im sixtyfour'}, \n",
    "                          {'$set': {'ctitle': 'when im sixty four'}})\n",
    "genius_tracks.update_many({'ctitle': 'packt like sardines in a crushd tin box'}, \n",
    "                          {'$set': {'ctitle': 'packt like sardines in a crushed tin box'}})\n",
    "genius_tracks.update_many({'ctitle': 'a punchup at a wedding'}, \n",
    "                          {'$set': {'ctitle': 'a punch up at a wedding'}})\n",
    "genius_tracks.update_many({'ctitle': 'dollars cents'}, \n",
    "                          {'$set': {'ctitle': 'dollars and cents'}})\n",
    "genius_tracks.update_many({'ctitle': 'bullet proofi wish i was'}, \n",
    "                          {'$set': {'ctitle': 'bullet proof i wish i was'}})"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 79,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(306, 293, 41)"
      ]
     },
     "execution_count": 79,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "in_both = set(g['ctitle'] for g in genius_tracks.find({}, ['ctitle']) if tracks.find({'ctitle': g['ctitle']}).count())\n",
    "genius_only = set(g['ctitle'] for g in genius_tracks.find({}, ['ctitle']) if not tracks.find({'ctitle': g['ctitle']}).count())\n",
    "spotify_only = set(s['ctitle'] for s in tracks.find({}, ['ctitle']) if not genius_tracks.find({'ctitle': s['ctitle']}).count())\n",
    "len(in_both), len(genius_only), len(spotify_only)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Copy the lyrics over<a name=\"copylyrics\"></a>\n",
    "Now can can connect the tracks, let's copy across the lyrics from the Genius collection into the Spotify collection. We'll calculate the lyrical density at the same time.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 80,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "for t in tracks.find({}, ['ctitle', 'duration_ms']):\n",
    "    gts = genius_tracks.find({'ctitle': t['ctitle'], 'lyrics': {'$exists': True}}, ['lyrics', 'original_lyrics'])\n",
    "    for gt in gts:\n",
    "        tracks.update_one({'_id': t['_id']}, \n",
    "                          {'$set': {'lyrics': gt['lyrics'], \n",
    "                                    'original_lyrics': gt['original_lyrics'],\n",
    "                                    'lyrical_density': 1000 * len(gt['lyrics'].split()) / t['duration_ms']}})"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Sentiment analysis<a name=\"sentimentanalysis\"></a>\n",
    "I couldn't find an easily-installable equivalent to the NRC corpus, so I'm using a sentiment analysis API endpoint from [Text Processing](http://text-processing.com/docs/sentiment.html).\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 81,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [],
   "source": [
    "for t in tracks.find({'lyrics': {'$exists': True}}, ['lyrics']):\n",
    "    text = t['lyrics']\n",
    "    if text:\n",
    "        query = urllib.parse.urlencode({'text': text}).encode('ascii')\n",
    "        headers = {'Accept': 'application/json',\n",
    "                   'User-Agent': 'curl/7.9.8 (i686-pc-linux-gnu) libcurl 7.9.8 (OpenSSL 0.9.6b) (ipv6 enabled)'}\n",
    "        request = urllib.request.Request('http://text-processing.com/api/sentiment/', \n",
    "                                 headers=headers, data=query)\n",
    "        with urllib.request.urlopen(request) as f:\n",
    "            response = json.loads(f.read().decode('utf-8'))\n",
    "            tracks.update_one({'_id': t['_id']}, {'$set': {'sentiment': response}})"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 82,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "dict_keys(['sentiment', 'mode', 'instrumentalness', 'href', 'energy', 'album', 'track_href', 'popularity', 'disc_number', 'liveness', 'available_markets', 'name', 'track_number', 'loudness', 'danceability', 'lyrics', 'uri', 'speechiness', 'type', 'explicit', 'external_urls', 'external_ids', 'artist_id', 'id', 'analysis_url', 'album_id', 'valence', '_id', 'lyrical_density', 'acousticness', 'ctitle', 'duration_ms', 'preview_url', 'artists', 'tempo', 'time_signature', 'artist_name', 'key', 'original_lyrics'])"
      ]
     },
     "execution_count": 82,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "tracks.find_one({'sentiment': {'$exists': True}}).keys()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 83,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'_id': '2ucFulEWapRAmTn7l6f5Q7',\n",
       " 'acousticness': 0.425,\n",
       " 'album': {'album_type': 'album',\n",
       "  'artists': [{'external_urls': {'spotify': 'https://open.spotify.com/artist/3WrFJ7ztbogyGnTHbHJFl2'},\n",
       "    'href': 'https://api.spotify.com/v1/artists/3WrFJ7ztbogyGnTHbHJFl2',\n",
       "    'id': '3WrFJ7ztbogyGnTHbHJFl2',\n",
       "    'name': 'The Beatles',\n",
       "    'type': 'artist',\n",
       "    'uri': 'spotify:artist:3WrFJ7ztbogyGnTHbHJFl2'}],\n",
       "  'available_markets': ['AD',\n",
       "   'AR',\n",
       "   'AT',\n",
       "   'AU',\n",
       "   'BE',\n",
       "   'BG',\n",
       "   'BO',\n",
       "   'BR',\n",
       "   'CH',\n",
       "   'CL',\n",
       "   'CO',\n",
       "   'CR',\n",
       "   'CY',\n",
       "   'CZ',\n",
       "   'DE',\n",
       "   'DK',\n",
       "   'DO',\n",
       "   'EC',\n",
       "   'EE',\n",
       "   'ES',\n",
       "   'FI',\n",
       "   'FR',\n",
       "   'GB',\n",
       "   'GR',\n",
       "   'GT',\n",
       "   'HK',\n",
       "   'HN',\n",
       "   'HU',\n",
       "   'ID',\n",
       "   'IE',\n",
       "   'IS',\n",
       "   'IT',\n",
       "   'JP',\n",
       "   'LI',\n",
       "   'LT',\n",
       "   'LU',\n",
       "   'LV',\n",
       "   'MC',\n",
       "   'MT',\n",
       "   'MY',\n",
       "   'NI',\n",
       "   'NL',\n",
       "   'NO',\n",
       "   'NZ',\n",
       "   'PA',\n",
       "   'PE',\n",
       "   'PH',\n",
       "   'PL',\n",
       "   'PT',\n",
       "   'PY',\n",
       "   'SE',\n",
       "   'SG',\n",
       "   'SK',\n",
       "   'SV',\n",
       "   'TR',\n",
       "   'TW',\n",
       "   'UY'],\n",
       "  'external_urls': {'spotify': 'https://open.spotify.com/album/03Qh833fEdVT30Pfs93ea6'},\n",
       "  'href': 'https://api.spotify.com/v1/albums/03Qh833fEdVT30Pfs93ea6',\n",
       "  'id': '03Qh833fEdVT30Pfs93ea6',\n",
       "  'images': [{'height': 640,\n",
       "    'url': 'https://i.scdn.co/image/d6028aea974c75961cb9cdc2263f5d8a8a6582bd',\n",
       "    'width': 640},\n",
       "   {'height': 300,\n",
       "    'url': 'https://i.scdn.co/image/adebae7bf6a4a441bc6a5a17ca840f77df6ed3b9',\n",
       "    'width': 300},\n",
       "   {'height': 64,\n",
       "    'url': 'https://i.scdn.co/image/3b0ddfadf13b9f3e74da93fcb21e4183a4d9fcc8',\n",
       "    'width': 64}],\n",
       "  'name': 'The Beatles (Remastered)',\n",
       "  'type': 'album',\n",
       "  'uri': 'spotify:album:03Qh833fEdVT30Pfs93ea6'},\n",
       " 'album_id': '03Qh833fEdVT30Pfs93ea6',\n",
       " 'analysis_url': 'https://api.spotify.com/v1/audio-analysis/2ucFulEWapRAmTn7l6f5Q7',\n",
       " 'artist_id': '3WrFJ7ztbogyGnTHbHJFl2',\n",
       " 'artist_name': 'The Beatles',\n",
       " 'artists': [{'external_urls': {'spotify': 'https://open.spotify.com/artist/3WrFJ7ztbogyGnTHbHJFl2'},\n",
       "   'href': 'https://api.spotify.com/v1/artists/3WrFJ7ztbogyGnTHbHJFl2',\n",
       "   'id': '3WrFJ7ztbogyGnTHbHJFl2',\n",
       "   'name': 'The Beatles',\n",
       "   'type': 'artist',\n",
       "   'uri': 'spotify:artist:3WrFJ7ztbogyGnTHbHJFl2'}],\n",
       " 'available_markets': ['AD',\n",
       "  'AR',\n",
       "  'AT',\n",
       "  'AU',\n",
       "  'BE',\n",
       "  'BG',\n",
       "  'BO',\n",
       "  'BR',\n",
       "  'CH',\n",
       "  'CL',\n",
       "  'CO',\n",
       "  'CR',\n",
       "  'CY',\n",
       "  'CZ',\n",
       "  'DE',\n",
       "  'DK',\n",
       "  'DO',\n",
       "  'EC',\n",
       "  'EE',\n",
       "  'ES',\n",
       "  'FI',\n",
       "  'FR',\n",
       "  'GB',\n",
       "  'GR',\n",
       "  'GT',\n",
       "  'HK',\n",
       "  'HN',\n",
       "  'HU',\n",
       "  'ID',\n",
       "  'IE',\n",
       "  'IS',\n",
       "  'IT',\n",
       "  'JP',\n",
       "  'LI',\n",
       "  'LT',\n",
       "  'LU',\n",
       "  'LV',\n",
       "  'MC',\n",
       "  'MT',\n",
       "  'MY',\n",
       "  'NI',\n",
       "  'NL',\n",
       "  'NO',\n",
       "  'NZ',\n",
       "  'PA',\n",
       "  'PE',\n",
       "  'PH',\n",
       "  'PL',\n",
       "  'PT',\n",
       "  'PY',\n",
       "  'SE',\n",
       "  'SG',\n",
       "  'SK',\n",
       "  'SV',\n",
       "  'TR',\n",
       "  'TW',\n",
       "  'UY'],\n",
       " 'ctitle': 'wild honey pie',\n",
       " 'danceability': 0.792,\n",
       " 'disc_number': 1,\n",
       " 'duration_ms': 52973,\n",
       " 'energy': 0.763,\n",
       " 'explicit': False,\n",
       " 'external_ids': {'isrc': 'GBAYE0601648'},\n",
       " 'external_urls': {'spotify': 'https://open.spotify.com/track/2ucFulEWapRAmTn7l6f5Q7'},\n",
       " 'href': 'https://api.spotify.com/v1/tracks/2ucFulEWapRAmTn7l6f5Q7',\n",
       " 'id': '2ucFulEWapRAmTn7l6f5Q7',\n",
       " 'instrumentalness': 0.627,\n",
       " 'key': 2,\n",
       " 'liveness': 0.789,\n",
       " 'loudness': -11.185,\n",
       " 'lyrical_density': 0.16989787250108546,\n",
       " 'lyrics': 'honey pie honey pie i love you, honey pie',\n",
       " 'mode': 1,\n",
       " 'name': 'Wild Honey Pie - Remastered 2009',\n",
       " 'original_lyrics': '\\n\\nHoney Pie\\nHoney Pie\\nI love you, Honey Pie\\n\\n',\n",
       " 'popularity': 41,\n",
       " 'preview_url': 'https://p.scdn.co/mp3-preview/ddebab4d5e87d46a499ce557405cfadf0330bd9c?cid=null',\n",
       " 'sentiment': {'label': 'pos',\n",
       "  'probability': {'neg': 0.39117763475308887,\n",
       "   'neutral': 0.18873615212514983,\n",
       "   'pos': 0.6088223652469111}},\n",
       " 'speechiness': 0.0506,\n",
       " 'tempo': 89.9,\n",
       " 'time_signature': 4,\n",
       " 'track_href': 'https://api.spotify.com/v1/tracks/2ucFulEWapRAmTn7l6f5Q7',\n",
       " 'track_number': 5,\n",
       " 'type': 'audio_features',\n",
       " 'uri': 'spotify:track:2ucFulEWapRAmTn7l6f5Q7',\n",
       " 'valence': 0.153}"
      ]
     },
     "execution_count": 83,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "tracks.find_one({'sentiment': {'$exists': True}})"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Analysis<a name=\"analysis\"></a>\n",
    "Finally, we can get to the analysis of the data!\n",
    "\n",
    "First, what are the lowest-valence songs, and what's the distribution of valences?\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 84,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>name</th>\n",
       "      <th>valence</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>1AVrv7FD10FoKW38oBiKRg</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Bloom (Blawan Rmx)</td>\n",
       "      <td>0.0325</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>4rkGGQEqxHIXVJ4oXjOHgF</td>\n",
       "      <td>George Martin</td>\n",
       "      <td>Sea Of Holes - Remastered 2009</td>\n",
       "      <td>0.0352</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>01ZpFhrMMqKPVCwyqXneVp</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>True Love Waits</td>\n",
       "      <td>0.0378</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>53RYTfkLiyZuUZHwJC3Wmm</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>We Suck Young Blood</td>\n",
       "      <td>0.0378</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>0ttMfoND7IQqFSMVOPkELC</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Blue Jay Way - Remastered 2009</td>\n",
       "      <td>0.0380</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>66Pyms4pYaHEcPHZ7DdMbE</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>TKOL (Altrice Rmx)</td>\n",
       "      <td>0.0383</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6</th>\n",
       "      <td>3gKuywOm38axM8sJGq6Laq</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>MK 1</td>\n",
       "      <td>0.0391</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>75YUnz58ajMo2VIIuUFvOV</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>The Tourist</td>\n",
       "      <td>0.0400</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>8</th>\n",
       "      <td>0tKuiKb2mazZYdA6fPP7kI</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Good Evening Mrs Magpie (Modeselektor RMX)</td>\n",
       "      <td>0.0413</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>2PbwmAMaxIBIWis8XLViat</td>\n",
       "      <td>George Martin</td>\n",
       "      <td>Sea Of Monsters - Remastered 2009</td>\n",
       "      <td>0.0422</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>10</th>\n",
       "      <td>0COiZ7ncho2yi4HotbzgPv</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Motion Picture Soundtrack</td>\n",
       "      <td>0.0425</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11</th>\n",
       "      <td>2uYSbsxAMmK1awUl06T7ix</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>MK 2</td>\n",
       "      <td>0.0437</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12</th>\n",
       "      <td>4gq2bc2770XvbJdEtfUbmw</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Go Slowly</td>\n",
       "      <td>0.0453</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13</th>\n",
       "      <td>5olWalQH1oVza5D6xJg4oX</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Sail To The Moon</td>\n",
       "      <td>0.0458</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>14</th>\n",
       "      <td>49JPfRfsAfjWYRN6lbC3my</td>\n",
       "      <td>George Martin</td>\n",
       "      <td>Pepperland Laid Waste - Remastered 2009</td>\n",
       "      <td>0.0459</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>15</th>\n",
       "      <td>3uxhyRdWVXp7GQvERQl6fA</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Videotape</td>\n",
       "      <td>0.0468</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>16</th>\n",
       "      <td>29yXMFKIrY1fFY4DYBVZCu</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Life In a Glasshouse</td>\n",
       "      <td>0.0516</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>17</th>\n",
       "      <td>3cual6JOG286qZJmCxKRAT</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Tinker Tailor Soldier Sailor Rich Man Poor Man...</td>\n",
       "      <td>0.0517</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>18</th>\n",
       "      <td>6f6pEjgfTtuRROmJ4a7Gf3</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>The Numbers</td>\n",
       "      <td>0.0545</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>19</th>\n",
       "      <td>0agoaPIy92gPZ6zRhqXarE</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Tomorrow Never Knows - Remastered 2009</td>\n",
       "      <td>0.0556</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                       _id    artist_name  \\\n",
       "0   1AVrv7FD10FoKW38oBiKRg      Radiohead   \n",
       "1   4rkGGQEqxHIXVJ4oXjOHgF  George Martin   \n",
       "2   01ZpFhrMMqKPVCwyqXneVp      Radiohead   \n",
       "3   53RYTfkLiyZuUZHwJC3Wmm      Radiohead   \n",
       "4   0ttMfoND7IQqFSMVOPkELC    The Beatles   \n",
       "5   66Pyms4pYaHEcPHZ7DdMbE      Radiohead   \n",
       "6   3gKuywOm38axM8sJGq6Laq      Radiohead   \n",
       "7   75YUnz58ajMo2VIIuUFvOV      Radiohead   \n",
       "8   0tKuiKb2mazZYdA6fPP7kI      Radiohead   \n",
       "9   2PbwmAMaxIBIWis8XLViat  George Martin   \n",
       "10  0COiZ7ncho2yi4HotbzgPv      Radiohead   \n",
       "11  2uYSbsxAMmK1awUl06T7ix      Radiohead   \n",
       "12  4gq2bc2770XvbJdEtfUbmw      Radiohead   \n",
       "13  5olWalQH1oVza5D6xJg4oX      Radiohead   \n",
       "14  49JPfRfsAfjWYRN6lbC3my  George Martin   \n",
       "15  3uxhyRdWVXp7GQvERQl6fA      Radiohead   \n",
       "16  29yXMFKIrY1fFY4DYBVZCu      Radiohead   \n",
       "17  3cual6JOG286qZJmCxKRAT      Radiohead   \n",
       "18  6f6pEjgfTtuRROmJ4a7Gf3      Radiohead   \n",
       "19  0agoaPIy92gPZ6zRhqXarE    The Beatles   \n",
       "\n",
       "                                                 name  valence  \n",
       "0                                  Bloom (Blawan Rmx)   0.0325  \n",
       "1                      Sea Of Holes - Remastered 2009   0.0352  \n",
       "2                                     True Love Waits   0.0378  \n",
       "3                                 We Suck Young Blood   0.0378  \n",
       "4                      Blue Jay Way - Remastered 2009   0.0380  \n",
       "5                                  TKOL (Altrice Rmx)   0.0383  \n",
       "6                                                MK 1   0.0391  \n",
       "7                                         The Tourist   0.0400  \n",
       "8          Good Evening Mrs Magpie (Modeselektor RMX)   0.0413  \n",
       "9                   Sea Of Monsters - Remastered 2009   0.0422  \n",
       "10                          Motion Picture Soundtrack   0.0425  \n",
       "11                                               MK 2   0.0437  \n",
       "12                                          Go Slowly   0.0453  \n",
       "13                                   Sail To The Moon   0.0458  \n",
       "14            Pepperland Laid Waste - Remastered 2009   0.0459  \n",
       "15                                          Videotape   0.0468  \n",
       "16                               Life In a Glasshouse   0.0516  \n",
       "17  Tinker Tailor Soldier Sailor Rich Man Poor Man...   0.0517  \n",
       "18                                        The Numbers   0.0545  \n",
       "19             Tomorrow Never Knows - Remastered 2009   0.0556  "
      ]
     },
     "execution_count": 84,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pd.DataFrame(list(tracks.find({}, \n",
    "                              ['artist_name', 'name', 'valence'], \n",
    "                              sort=[('valence', pymongo.ASCENDING)], limit=20)))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Just the Beatles songs."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 85,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>name</th>\n",
       "      <th>valence</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>113</th>\n",
       "      <td>0ttMfoND7IQqFSMVOPkELC</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Blue Jay Way - Remastered 2009</td>\n",
       "      <td>0.0380</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>147</th>\n",
       "      <td>0agoaPIy92gPZ6zRhqXarE</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Tomorrow Never Knows - Remastered 2009</td>\n",
       "      <td>0.0556</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>109</th>\n",
       "      <td>6ZrPbHp9kRmQj1tGLvna8U</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Revolution 9 - Remastered 2009</td>\n",
       "      <td>0.0963</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>104</th>\n",
       "      <td>27YZJHyTTDIurMqDu1v2ef</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Long, Long, Long - Remastered 2009</td>\n",
       "      <td>0.1350</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>2ucFulEWapRAmTn7l6f5Q7</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Wild Honey Pie - Remastered 2009</td>\n",
       "      <td>0.1530</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>66</th>\n",
       "      <td>4cLoL5KPfE1hAwfsO84FX7</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Because - Remastered 2009</td>\n",
       "      <td>0.1620</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>133</th>\n",
       "      <td>3ZFBeIyP41HhnALjxWy1pR</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>A Day In The Life - Remastered 2009</td>\n",
       "      <td>0.1620</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>44</th>\n",
       "      <td>7iABnSNZciNepqGtjMQxxd</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Come Together - Remastered 2015</td>\n",
       "      <td>0.1780</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>59</th>\n",
       "      <td>0MKqeOVdZcUFGJvWpGCKbG</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Come Together - Remastered 2009</td>\n",
       "      <td>0.1790</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>110</th>\n",
       "      <td>2tf8ljpWPmXNIFgRVhEuJg</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Good Night - Remastered 2009</td>\n",
       "      <td>0.1920</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                        _id  artist_name  \\\n",
       "113  0ttMfoND7IQqFSMVOPkELC  The Beatles   \n",
       "147  0agoaPIy92gPZ6zRhqXarE  The Beatles   \n",
       "109  6ZrPbHp9kRmQj1tGLvna8U  The Beatles   \n",
       "104  27YZJHyTTDIurMqDu1v2ef  The Beatles   \n",
       "0    2ucFulEWapRAmTn7l6f5Q7  The Beatles   \n",
       "66   4cLoL5KPfE1hAwfsO84FX7  The Beatles   \n",
       "133  3ZFBeIyP41HhnALjxWy1pR  The Beatles   \n",
       "44   7iABnSNZciNepqGtjMQxxd  The Beatles   \n",
       "59   0MKqeOVdZcUFGJvWpGCKbG  The Beatles   \n",
       "110  2tf8ljpWPmXNIFgRVhEuJg  The Beatles   \n",
       "\n",
       "                                       name  valence  \n",
       "113          Blue Jay Way - Remastered 2009   0.0380  \n",
       "147  Tomorrow Never Knows - Remastered 2009   0.0556  \n",
       "109          Revolution 9 - Remastered 2009   0.0963  \n",
       "104      Long, Long, Long - Remastered 2009   0.1350  \n",
       "0          Wild Honey Pie - Remastered 2009   0.1530  \n",
       "66                Because - Remastered 2009   0.1620  \n",
       "133     A Day In The Life - Remastered 2009   0.1620  \n",
       "44          Come Together - Remastered 2015   0.1780  \n",
       "59          Come Together - Remastered 2009   0.1790  \n",
       "110            Good Night - Remastered 2009   0.1920  "
      ]
     },
     "execution_count": 85,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "beatles_df = pd.DataFrame(list(tracks.find({'artist_id': beatles_id}, \n",
    "                              ['artist_name', 'name', 'valence'])))\n",
    "beatles_df.sort_values('valence').head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "And plot the valences.."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 86,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<matplotlib.axes._subplots.AxesSubplot at 0x7f622af36c88>"
      ]
     },
     "execution_count": 86,
     "metadata": {},
     "output_type": "execute_result"
    },
    {
     "data": {
      "image/png": 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7uffeexdY0c5OP/10+pnxlV6/r2uXXt99L7X2ojL1fXuuaUHOPvunOXLkf4ho/oeI+++/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\nQmCC\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622ac41668>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "beatles_df['valence'].hist()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 88,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<matplotlib.axes._subplots.AxesSubplot at 0x7f622af5d588>"
      ]
     },
     "execution_count": 88,
     "metadata": {},
     "output_type": "execute_result"
    },
    {
     "data": {
      "image/png": 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      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622ac41748>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "radiohead_df['valence'].hist()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "And now plot both on the same chart, to clearly show that Radiohead songs are generally lower-valence than The Beatles."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 89,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<matplotlib.axes._subplots.AxesSubplot at 0x7f622af4d8d0>"
      ]
     },
     "execution_count": 89,
     "metadata": {},
     "output_type": "execute_result"
    },
    {
     "data": {
      "image/png": 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      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622adf0908>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "beatles_df['valence'].hist(alpha=0.5, color='blue')\n",
    "radiohead_df['valence'].hist(alpha=0.5, color='red')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Sentiment<a name=\"sentiment\"></a>\n",
    "We can now look at the sentiment scores for the lyrics. We start by looking at the most negative songs for each artist.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 90,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>name</th>\n",
       "      <th>neg</th>\n",
       "      <th>neutral</th>\n",
       "      <th>pos</th>\n",
       "      <th>valence</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>88</th>\n",
       "      <td>3VgxeWOGdUYvtX1j8C9VyV</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>I'm So Tired - Remastered 2009</td>\n",
       "      <td>0.892489</td>\n",
       "      <td>0.146302</td>\n",
       "      <td>0.107511</td>\n",
       "      <td>0.6300</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>62</th>\n",
       "      <td>6gLmFcRwyQCQT23Df2Re9G</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>I Want You (She's So Heavy) - Remastered 2009</td>\n",
       "      <td>0.882642</td>\n",
       "      <td>0.091819</td>\n",
       "      <td>0.117358</td>\n",
       "      <td>0.4160</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107</th>\n",
       "      <td>6ZrPbHp9kRmQj1tGLvna8U</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Revolution 9 - Remastered 2009</td>\n",
       "      <td>0.873285</td>\n",
       "      <td>0.172322</td>\n",
       "      <td>0.126715</td>\n",
       "      <td>0.0963</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>186</th>\n",
       "      <td>3EbGioQyKyf4dycuiPOg3k</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Everybody's Trying To Be My Baby - Remastered ...</td>\n",
       "      <td>0.866985</td>\n",
       "      <td>0.914332</td>\n",
       "      <td>0.133015</td>\n",
       "      <td>0.9370</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>16</th>\n",
       "      <td>79QDgDoBbS7pCrOjIH7ByA</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Everybody’s Trying To Be My Baby - Live / Bonu...</td>\n",
       "      <td>0.866985</td>\n",
       "      <td>0.914332</td>\n",
       "      <td>0.133015</td>\n",
       "      <td>0.6390</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>53</th>\n",
       "      <td>4311wT21Et0q3vepFwXjTu</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>One After 909 - Remastered 2009</td>\n",
       "      <td>0.865737</td>\n",
       "      <td>0.158470</td>\n",
       "      <td>0.134263</td>\n",
       "      <td>0.9040</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>148</th>\n",
       "      <td>3QbhVaulXxTyuAxHY3Pa5N</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>You Won't See Me - Remastered 2009</td>\n",
       "      <td>0.864585</td>\n",
       "      <td>0.247226</td>\n",
       "      <td>0.135415</td>\n",
       "      <td>0.4620</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>195</th>\n",
       "      <td>3Aqo28W4LLAolYpN3duVJl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>I'll Cry Instead - Remastered 2009</td>\n",
       "      <td>0.863772</td>\n",
       "      <td>0.160516</td>\n",
       "      <td>0.136228</td>\n",
       "      <td>0.9610</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>92</th>\n",
       "      <td>3OSi8ehmSWLTD5KatlzX8r</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Don't Pass Me By - Remastered 2009</td>\n",
       "      <td>0.857831</td>\n",
       "      <td>0.120676</td>\n",
       "      <td>0.142169</td>\n",
       "      <td>0.9480</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>134</th>\n",
       "      <td>3wAOX1N5M0ta3QNsokmhJV</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>I'm Only Sleeping - Remastered 2009</td>\n",
       "      <td>0.857651</td>\n",
       "      <td>0.269800</td>\n",
       "      <td>0.142349</td>\n",
       "      <td>0.7000</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                        _id  artist_name  \\\n",
       "88   3VgxeWOGdUYvtX1j8C9VyV  The Beatles   \n",
       "62   6gLmFcRwyQCQT23Df2Re9G  The Beatles   \n",
       "107  6ZrPbHp9kRmQj1tGLvna8U  The Beatles   \n",
       "186  3EbGioQyKyf4dycuiPOg3k  The Beatles   \n",
       "16   79QDgDoBbS7pCrOjIH7ByA  The Beatles   \n",
       "53   4311wT21Et0q3vepFwXjTu  The Beatles   \n",
       "148  3QbhVaulXxTyuAxHY3Pa5N  The Beatles   \n",
       "195  3Aqo28W4LLAolYpN3duVJl  The Beatles   \n",
       "92   3OSi8ehmSWLTD5KatlzX8r  The Beatles   \n",
       "134  3wAOX1N5M0ta3QNsokmhJV  The Beatles   \n",
       "\n",
       "                                                  name       neg   neutral  \\\n",
       "88                      I'm So Tired - Remastered 2009  0.892489  0.146302   \n",
       "62       I Want You (She's So Heavy) - Remastered 2009  0.882642  0.091819   \n",
       "107                     Revolution 9 - Remastered 2009  0.873285  0.172322   \n",
       "186  Everybody's Trying To Be My Baby - Remastered ...  0.866985  0.914332   \n",
       "16   Everybody’s Trying To Be My Baby - Live / Bonu...  0.866985  0.914332   \n",
       "53                     One After 909 - Remastered 2009  0.865737  0.158470   \n",
       "148                 You Won't See Me - Remastered 2009  0.864585  0.247226   \n",
       "195                 I'll Cry Instead - Remastered 2009  0.863772  0.160516   \n",
       "92                  Don't Pass Me By - Remastered 2009  0.857831  0.120676   \n",
       "134                I'm Only Sleeping - Remastered 2009  0.857651  0.269800   \n",
       "\n",
       "          pos  valence  \n",
       "88   0.107511   0.6300  \n",
       "62   0.117358   0.4160  \n",
       "107  0.126715   0.0963  \n",
       "186  0.133015   0.9370  \n",
       "16   0.133015   0.6390  \n",
       "53   0.134263   0.9040  \n",
       "148  0.135415   0.4620  \n",
       "195  0.136228   0.9610  \n",
       "92   0.142169   0.9480  \n",
       "134  0.142349   0.7000  "
      ]
     },
     "execution_count": 90,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pipeline = [\n",
    "    {'$match': {'lyrics': {'$exists': True}, 'sentiment': {'$exists': True}, 'valence': {'$exists': True},\n",
    "               'artist_id': beatles_id}},\n",
    "    {'$project': {'artist_name': '$artist_name',\n",
    "                  'name': '$name',\n",
    "                  'valence': '$valence',\n",
    "                  'neg': '$sentiment.probability.neg',\n",
    "                  'neutral': '$sentiment.probability.neutral',\n",
    "                  'pos': '$sentiment.probability.pos'}}\n",
    "]\n",
    "beatles_df = pd.DataFrame(list(tracks.aggregate(pipeline)))\n",
    "beatles_df.sort_values('neg', ascending=False).head(10)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 91,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>name</th>\n",
       "      <th>neg</th>\n",
       "      <th>neutral</th>\n",
       "      <th>pos</th>\n",
       "      <th>valence</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>101</th>\n",
       "      <td>11qDTSr3Dj4TkPnBcIOqEJ</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Vegetable</td>\n",
       "      <td>0.883291</td>\n",
       "      <td>0.170371</td>\n",
       "      <td>0.116709</td>\n",
       "      <td>0.399</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>49</th>\n",
       "      <td>38WL6GlG9NHFiQS6JxV84r</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Myxomatosis</td>\n",
       "      <td>0.864921</td>\n",
       "      <td>0.261355</td>\n",
       "      <td>0.135079</td>\n",
       "      <td>0.560</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>97</th>\n",
       "      <td>2zYmvi3w2T8a9Ckrv21bvW</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Stop Whispering</td>\n",
       "      <td>0.855982</td>\n",
       "      <td>0.188600</td>\n",
       "      <td>0.144018</td>\n",
       "      <td>0.279</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>34</th>\n",
       "      <td>1w8QCSDH4QobcQeT4uMKLm</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>4 Minute Warning</td>\n",
       "      <td>0.854820</td>\n",
       "      <td>0.516574</td>\n",
       "      <td>0.145180</td>\n",
       "      <td>0.219</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>83</th>\n",
       "      <td>3aDUSpF3LexOr1lFKvPV2h</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>The Bends</td>\n",
       "      <td>0.854244</td>\n",
       "      <td>0.533823</td>\n",
       "      <td>0.145756</td>\n",
       "      <td>0.315</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>103</th>\n",
       "      <td>48IEDejXX5LH8TAC3VIGpc</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>I Can't</td>\n",
       "      <td>0.849730</td>\n",
       "      <td>0.265375</td>\n",
       "      <td>0.150270</td>\n",
       "      <td>0.269</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>75</th>\n",
       "      <td>3SVAN3BRByDmHOhKyIDxfC</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Karma Police</td>\n",
       "      <td>0.846129</td>\n",
       "      <td>0.100438</td>\n",
       "      <td>0.153871</td>\n",
       "      <td>0.311</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>89</th>\n",
       "      <td>4dPKQxaraW6CG1rTBzV6DW</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>My Iron Lung</td>\n",
       "      <td>0.845080</td>\n",
       "      <td>0.190863</td>\n",
       "      <td>0.154920</td>\n",
       "      <td>0.643</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>24</th>\n",
       "      <td>5SdmtFbNOD7Qej6jFCHkOM</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Faust Arp</td>\n",
       "      <td>0.838532</td>\n",
       "      <td>0.167778</td>\n",
       "      <td>0.161468</td>\n",
       "      <td>0.224</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>46</th>\n",
       "      <td>77SPrxY5gn6VPrKPGrfLnM</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>There, There</td>\n",
       "      <td>0.835541</td>\n",
       "      <td>0.135951</td>\n",
       "      <td>0.164459</td>\n",
       "      <td>0.726</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                        _id artist_name              name       neg   neutral  \\\n",
       "101  11qDTSr3Dj4TkPnBcIOqEJ   Radiohead         Vegetable  0.883291  0.170371   \n",
       "49   38WL6GlG9NHFiQS6JxV84r   Radiohead       Myxomatosis  0.864921  0.261355   \n",
       "97   2zYmvi3w2T8a9Ckrv21bvW   Radiohead   Stop Whispering  0.855982  0.188600   \n",
       "34   1w8QCSDH4QobcQeT4uMKLm   Radiohead  4 Minute Warning  0.854820  0.516574   \n",
       "83   3aDUSpF3LexOr1lFKvPV2h   Radiohead         The Bends  0.854244  0.533823   \n",
       "103  48IEDejXX5LH8TAC3VIGpc   Radiohead           I Can't  0.849730  0.265375   \n",
       "75   3SVAN3BRByDmHOhKyIDxfC   Radiohead      Karma Police  0.846129  0.100438   \n",
       "89   4dPKQxaraW6CG1rTBzV6DW   Radiohead      My Iron Lung  0.845080  0.190863   \n",
       "24   5SdmtFbNOD7Qej6jFCHkOM   Radiohead         Faust Arp  0.838532  0.167778   \n",
       "46   77SPrxY5gn6VPrKPGrfLnM   Radiohead      There, There  0.835541  0.135951   \n",
       "\n",
       "          pos  valence  \n",
       "101  0.116709    0.399  \n",
       "49   0.135079    0.560  \n",
       "97   0.144018    0.279  \n",
       "34   0.145180    0.219  \n",
       "83   0.145756    0.315  \n",
       "103  0.150270    0.269  \n",
       "75   0.153871    0.311  \n",
       "89   0.154920    0.643  \n",
       "24   0.161468    0.224  \n",
       "46   0.164459    0.726  "
      ]
     },
     "execution_count": 91,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pipeline = [\n",
    "    {'$match': {'lyrics': {'$exists': True}, 'sentiment': {'$exists': True}, 'valence': {'$exists': True},\n",
    "               'artist_id': radiohead_id}},\n",
    "    {'$project': {'artist_name': '$artist_name',\n",
    "                  'name': '$name',\n",
    "                  'valence': '$valence',\n",
    "                  'neg': '$sentiment.probability.neg',\n",
    "                  'neutral': '$sentiment.probability.neutral',\n",
    "                  'pos': '$sentiment.probability.pos'}}\n",
    "]\n",
    "radiohead_df = pd.DataFrame(list(tracks.aggregate(pipeline)))\n",
    "radiohead_df.sort_values('neg', ascending=False).head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Plot the valence/negativity scatter plot, using blue for The Beatles and red for Radiohead.\n",
    "\n",
    "If valence and negativity are correlated, I'd expect to see a trend from high negativity/low valence to low negativity/high valence."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 92,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "image/png": 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dBgXRLQX9/qVbEFFZBmFMRYRug7RlZhilZQT5ludzm5L89Ulb3JW0d687th7d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\nCsIwDMNwYgrCMAzDcGIKwjAMw3Dy/wGKI3fieg/ipgAAAABJRU5ErkJggg==\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622ac3f978>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "plt.scatter(beatles_df['valence'], beatles_df['neg'], color='blue')\n",
    "plt.scatter(radiohead_df['valence'], radiohead_df['neg'], color='red')\n",
    "plt.xlabel('Valence')\n",
    "plt.ylabel('Sentiment negativity')\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Neutrality, I think, is to do with the confidence in the classification."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 93,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "image/png": 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QlvG5HfghLr4wWa5mKnXDLIiSSSadhydzFHQqE/o0i/PMisNHLNZXd03M7+oj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\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622ac00198>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "plt.scatter(beatles_df['neutral'], beatles_df['neg'], color='blue')\n",
    "plt.scatter(radiohead_df['neutral'], radiohead_df['neg'], color='red')\n",
    "plt.xlabel('Sentiment neutrality')\n",
    "plt.ylabel('Sentiment negativity')\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "This plot shows that most songs have a low neutrality, so express a clear sentiment in the lyrics. Let's plot the distribution of \"neutral\" scores to highlight this."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 95,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<matplotlib.axes._subplots.AxesSubplot at 0x7f622ae7f978>"
      ]
     },
     "execution_count": 95,
     "metadata": {},
     "output_type": "execute_result"
    },
    {
     "data": {
      "image/png": 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      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622b052438>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "beatles_df['neutral'].hist(alpha=0.5, color='blue')\n",
    "radiohead_df['neutral'].hist(alpha=0.5, color='red')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Gloom index<a name=\"gloomindex\"></a>\n",
    "Let's recreate the \"gloom index\" idea from the original post and see what it tells us. Bear in mind that I'm using the sentiment negativity score, not the fraction of \"sad\" words.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 97,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>gloom</th>\n",
       "      <th>lyrical_density</th>\n",
       "      <th>name</th>\n",
       "      <th>neg</th>\n",
       "      <th>valence</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>279</th>\n",
       "      <td>66cuLvkHsW7dNkfNk6gQP9</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.505262</td>\n",
       "      <td>1.991725</td>\n",
       "      <td>A Wolf At the Door</td>\n",
       "      <td>0.793363</td>\n",
       "      <td>0.3630</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>0GRplBEB2FWCKutwMmS6nY</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.475037</td>\n",
       "      <td>1.853118</td>\n",
       "      <td>Ticket To Ride - Live / Remastered</td>\n",
       "      <td>0.825439</td>\n",
       "      <td>0.4050</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>252</th>\n",
       "      <td>5SdmtFbNOD7Qej6jFCHkOM</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.398920</td>\n",
       "      <td>1.411166</td>\n",
       "      <td>Faust Arp</td>\n",
       "      <td>0.838532</td>\n",
       "      <td>0.2240</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>89</th>\n",
       "      <td>3VgxeWOGdUYvtX1j8C9VyV</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.393697</td>\n",
       "      <td>1.708599</td>\n",
       "      <td>I'm So Tired - Remastered 2009</td>\n",
       "      <td>0.892489</td>\n",
       "      <td>0.6300</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>108</th>\n",
       "      <td>6ZrPbHp9kRmQj1tGLvna8U</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.270327</td>\n",
       "      <td>0.874479</td>\n",
       "      <td>Revolution 9 - Remastered 2009</td>\n",
       "      <td>0.873285</td>\n",
       "      <td>0.0963</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>74</th>\n",
       "      <td>5H9q6ctIlamkqukdTrNt3k</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.261539</td>\n",
       "      <td>2.616693</td>\n",
       "      <td>Her Majesty - Remastered 2009</td>\n",
       "      <td>0.556608</td>\n",
       "      <td>0.4900</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>311</th>\n",
       "      <td>3aDUSpF3LexOr1lFKvPV2h</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.239768</td>\n",
       "      <td>1.100731</td>\n",
       "      <td>The Bends</td>\n",
       "      <td>0.854244</td>\n",
       "      <td>0.3150</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>24</th>\n",
       "      <td>0mNQUZEATk2uItMUtiLWK5</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.213645</td>\n",
       "      <td>1.615224</td>\n",
       "      <td>A Hard Day's Night - Remastered 2015</td>\n",
       "      <td>0.833309</td>\n",
       "      <td>0.7520</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>112</th>\n",
       "      <td>0ttMfoND7IQqFSMVOPkELC</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.212148</td>\n",
       "      <td>0.799772</td>\n",
       "      <td>Blue Jay Way - Remastered 2009</td>\n",
       "      <td>0.812490</td>\n",
       "      <td>0.0380</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>161</th>\n",
       "      <td>5ou2BiQ9FxIYkxsYvYHpAT</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.210378</td>\n",
       "      <td>1.648037</td>\n",
       "      <td>Help! - Remastered 2009</td>\n",
       "      <td>0.823915</td>\n",
       "      <td>0.7610</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                        _id  artist_name     gloom  lyrical_density  \\\n",
       "279  66cuLvkHsW7dNkfNk6gQP9    Radiohead  1.505262         1.991725   \n",
       "5    0GRplBEB2FWCKutwMmS6nY  The Beatles  1.475037         1.853118   \n",
       "252  5SdmtFbNOD7Qej6jFCHkOM    Radiohead  1.398920         1.411166   \n",
       "89   3VgxeWOGdUYvtX1j8C9VyV  The Beatles  1.393697         1.708599   \n",
       "108  6ZrPbHp9kRmQj1tGLvna8U  The Beatles  1.270327         0.874479   \n",
       "74   5H9q6ctIlamkqukdTrNt3k  The Beatles  1.261539         2.616693   \n",
       "311  3aDUSpF3LexOr1lFKvPV2h    Radiohead  1.239768         1.100731   \n",
       "24   0mNQUZEATk2uItMUtiLWK5  The Beatles  1.213645         1.615224   \n",
       "112  0ttMfoND7IQqFSMVOPkELC  The Beatles  1.212148         0.799772   \n",
       "161  5ou2BiQ9FxIYkxsYvYHpAT  The Beatles  1.210378         1.648037   \n",
       "\n",
       "                                     name       neg  valence  \n",
       "279                    A Wolf At the Door  0.793363   0.3630  \n",
       "5      Ticket To Ride - Live / Remastered  0.825439   0.4050  \n",
       "252                             Faust Arp  0.838532   0.2240  \n",
       "89         I'm So Tired - Remastered 2009  0.892489   0.6300  \n",
       "108        Revolution 9 - Remastered 2009  0.873285   0.0963  \n",
       "74          Her Majesty - Remastered 2009  0.556608   0.4900  \n",
       "311                             The Bends  0.854244   0.3150  \n",
       "24   A Hard Day's Night - Remastered 2015  0.833309   0.7520  \n",
       "112        Blue Jay Way - Remastered 2009  0.812490   0.0380  \n",
       "161               Help! - Remastered 2009  0.823915   0.7610  "
      ]
     },
     "execution_count": 97,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pipeline = [\n",
    "    {'$match': {'lyrics': {'$exists': True}, 'sentiment': {'$exists': True}, 'valence': {'$exists': True}}},\n",
    "    {'$project': {'artist_name': '$artist_name',\n",
    "                  'name': '$name',\n",
    "                  'valence': '$valence',\n",
    "                  'neg': '$sentiment.probability.neg',\n",
    "                  'lyrical_density': '$lyrical_density',\n",
    "                  'gloom': {'$divide': [{'$add': [{'$subtract': [1, '$valence']},\n",
    "                                                  {'$multiply': ['$sentiment.probability.neg', \n",
    "                                                                 {'$add': ['$lyrical_density', 1]}]}]}, \n",
    "                                        2]}}}]\n",
    "results = pd.DataFrame(list(tracks.aggregate(pipeline)))\n",
    "results.sort_values('gloom', ascending=False).head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Interestingly, the gloomiest songs seem pretty evenly spread between Radiohead and The Beatles."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 471,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>gloom</th>\n",
       "      <th>lyrical_density</th>\n",
       "      <th>name</th>\n",
       "      <th>neg</th>\n",
       "      <th>valence</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>61</th>\n",
       "      <td>66cuLvkHsW7dNkfNk6gQP9</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.505262</td>\n",
       "      <td>1.991725</td>\n",
       "      <td>A Wolf At the Door</td>\n",
       "      <td>0.793363</td>\n",
       "      <td>0.3630</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>43</th>\n",
       "      <td>5SdmtFbNOD7Qej6jFCHkOM</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.398920</td>\n",
       "      <td>1.411166</td>\n",
       "      <td>Faust Arp</td>\n",
       "      <td>0.838532</td>\n",
       "      <td>0.2240</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>3aDUSpF3LexOr1lFKvPV2h</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.239768</td>\n",
       "      <td>1.100731</td>\n",
       "      <td>The Bends</td>\n",
       "      <td>0.854244</td>\n",
       "      <td>0.3150</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>34</th>\n",
       "      <td>0eZN5WsQfmNFICHuw59Zfz</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.150902</td>\n",
       "      <td>0.705463</td>\n",
       "      <td>Glass Eyes</td>\n",
       "      <td>0.800195</td>\n",
       "      <td>0.0629</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>20</th>\n",
       "      <td>3ovbSnT5NNhl1gzMcw1NRZ</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.142115</td>\n",
       "      <td>1.151468</td>\n",
       "      <td>Thinking About You</td>\n",
       "      <td>0.791660</td>\n",
       "      <td>0.4190</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11</th>\n",
       "      <td>045sp2JToyTaaKyXkGejPy</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.090813</td>\n",
       "      <td>0.581341</td>\n",
       "      <td>Fake Plastic Trees</td>\n",
       "      <td>0.827542</td>\n",
       "      <td>0.1270</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>24</th>\n",
       "      <td>4D6ZExVvYLZxhcAvifX5px</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.074047</td>\n",
       "      <td>0.749795</td>\n",
       "      <td>Prove Yourself</td>\n",
       "      <td>0.815006</td>\n",
       "      <td>0.2780</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13</th>\n",
       "      <td>4SE81CrzH0qPA8KHqM9Syz</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.064914</td>\n",
       "      <td>0.856048</td>\n",
       "      <td>Just</td>\n",
       "      <td>0.809154</td>\n",
       "      <td>0.3720</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>4aOAzvRdOsZSwZIgwcdeL0</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.063868</td>\n",
       "      <td>0.524102</td>\n",
       "      <td>Let Down</td>\n",
       "      <td>0.825887</td>\n",
       "      <td>0.1310</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>23</th>\n",
       "      <td>11qDTSr3Dj4TkPnBcIOqEJ</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>1.056187</td>\n",
       "      <td>0.711071</td>\n",
       "      <td>Vegetable</td>\n",
       "      <td>0.883291</td>\n",
       "      <td>0.3990</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                       _id artist_name     gloom  lyrical_density  \\\n",
       "61  66cuLvkHsW7dNkfNk6gQP9   Radiohead  1.505262         1.991725   \n",
       "43  5SdmtFbNOD7Qej6jFCHkOM   Radiohead  1.398920         1.411166   \n",
       "9   3aDUSpF3LexOr1lFKvPV2h   Radiohead  1.239768         1.100731   \n",
       "34  0eZN5WsQfmNFICHuw59Zfz   Radiohead  1.150902         0.705463   \n",
       "20  3ovbSnT5NNhl1gzMcw1NRZ   Radiohead  1.142115         1.151468   \n",
       "11  045sp2JToyTaaKyXkGejPy   Radiohead  1.090813         0.581341   \n",
       "24  4D6ZExVvYLZxhcAvifX5px   Radiohead  1.074047         0.749795   \n",
       "13  4SE81CrzH0qPA8KHqM9Syz   Radiohead  1.064914         0.856048   \n",
       "4   4aOAzvRdOsZSwZIgwcdeL0   Radiohead  1.063868         0.524102   \n",
       "23  11qDTSr3Dj4TkPnBcIOqEJ   Radiohead  1.056187         0.711071   \n",
       "\n",
       "                  name       neg  valence  \n",
       "61  A Wolf At the Door  0.793363   0.3630  \n",
       "43           Faust Arp  0.838532   0.2240  \n",
       "9            The Bends  0.854244   0.3150  \n",
       "34          Glass Eyes  0.800195   0.0629  \n",
       "20  Thinking About You  0.791660   0.4190  \n",
       "11  Fake Plastic Trees  0.827542   0.1270  \n",
       "24      Prove Yourself  0.815006   0.2780  \n",
       "13                Just  0.809154   0.3720  \n",
       "4             Let Down  0.825887   0.1310  \n",
       "23           Vegetable  0.883291   0.3990  "
      ]
     },
     "execution_count": 471,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pipeline = [\n",
    "    {'$match': {'lyrics': {'$exists': True}, 'sentiment': {'$exists': True}, 'valence': {'$exists': True},\n",
    "               'artist_id': radiohead_id}},\n",
    "    {'$project': {'artist_name': '$artist_name',\n",
    "                  'name': '$name',\n",
    "                  'valence': '$valence',\n",
    "                  'neg': '$sentiment.probability.neg',\n",
    "                  'lyrical_density': '$lyrical_density',\n",
    "                  'gloom': {'$divide': [{'$add': [{'$subtract': [1, '$valence']},\n",
    "                                                  {'$multiply': ['$sentiment.probability.neg', \n",
    "                                                                 {'$add': ['$lyrical_density', 1]}]}]}, \n",
    "                                        2]}}}]\n",
    "results = pd.DataFrame(list(tracks.aggregate(pipeline)))\n",
    "results.sort_values('gloom', ascending=False).head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "These, in theory, are the most depressing Radiohead songs. For information, the [fitteR happieR songs](http://rcharlie.com/2017-02-16-fitteR-happieR/) were:\n",
    "\n",
    "  | gloom_index|               track_name\n",
    "--|------------|--------------------------|\n",
    "1 |        1.00 |           True Love Waits\n",
    "2 |        6.46 |        Give Up The Ghost\n",
    "3 |        9.35 | Motion Picture Soundtrack\n",
    "4 |       13.70 |                 Let Down\n",
    "5 |       14.15 |             Pyramid Song\n",
    "6 |       14.57 |  Exit Music (For a Film)\n",
    "7 |       15.29 |          Dollars & Cents\n",
    "8 |       15.69 |              High And Dry\n",
    "9 |       15.80 | Tinker Tailor Soldier ...\n",
    "10|       16.03 |                Videotape\n",
    "\n",
    "...which has only one song in common, \"Let Down\". I'm not convinced by this analysis.\n",
    "\n",
    "What does the same analysis say for The Beatles?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 98,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
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       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>gloom</th>\n",
       "      <th>lyrical_density</th>\n",
       "      <th>name</th>\n",
       "      <th>neg</th>\n",
       "      <th>valence</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>0GRplBEB2FWCKutwMmS6nY</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.475037</td>\n",
       "      <td>1.853118</td>\n",
       "      <td>Ticket To Ride - Live / Remastered</td>\n",
       "      <td>0.825439</td>\n",
       "      <td>0.4050</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>88</th>\n",
       "      <td>3VgxeWOGdUYvtX1j8C9VyV</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.393697</td>\n",
       "      <td>1.708599</td>\n",
       "      <td>I'm So Tired - Remastered 2009</td>\n",
       "      <td>0.892489</td>\n",
       "      <td>0.6300</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107</th>\n",
       "      <td>6ZrPbHp9kRmQj1tGLvna8U</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.270327</td>\n",
       "      <td>0.874479</td>\n",
       "      <td>Revolution 9 - Remastered 2009</td>\n",
       "      <td>0.873285</td>\n",
       "      <td>0.0963</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>73</th>\n",
       "      <td>5H9q6ctIlamkqukdTrNt3k</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.261539</td>\n",
       "      <td>2.616693</td>\n",
       "      <td>Her Majesty - Remastered 2009</td>\n",
       "      <td>0.556608</td>\n",
       "      <td>0.4900</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>23</th>\n",
       "      <td>0mNQUZEATk2uItMUtiLWK5</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.213645</td>\n",
       "      <td>1.615224</td>\n",
       "      <td>A Hard Day's Night - Remastered 2015</td>\n",
       "      <td>0.833309</td>\n",
       "      <td>0.7520</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111</th>\n",
       "      <td>0ttMfoND7IQqFSMVOPkELC</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.212148</td>\n",
       "      <td>0.799772</td>\n",
       "      <td>Blue Jay Way - Remastered 2009</td>\n",
       "      <td>0.812490</td>\n",
       "      <td>0.0380</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>160</th>\n",
       "      <td>5ou2BiQ9FxIYkxsYvYHpAT</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.210378</td>\n",
       "      <td>1.648037</td>\n",
       "      <td>Help! - Remastered 2009</td>\n",
       "      <td>0.823915</td>\n",
       "      <td>0.7610</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>10</th>\n",
       "      <td>1alcPfZWUHh01l4Fnoo5Jt</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.203416</td>\n",
       "      <td>1.332561</td>\n",
       "      <td>Help! - Live / Remastered</td>\n",
       "      <td>0.823915</td>\n",
       "      <td>0.5150</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>220</th>\n",
       "      <td>2Iccm3cKBQHWt5yk0yX9nh</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.200158</td>\n",
       "      <td>1.530785</td>\n",
       "      <td>Please Please Me - Remastered 2009</td>\n",
       "      <td>0.833068</td>\n",
       "      <td>0.7080</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>27</th>\n",
       "      <td>1dfuJYDSIc41cw5RPsaCF1</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.187438</td>\n",
       "      <td>1.651824</td>\n",
       "      <td>Help! - Remastered 2015</td>\n",
       "      <td>0.823915</td>\n",
       "      <td>0.8100</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                        _id  artist_name     gloom  lyrical_density  \\\n",
       "4    0GRplBEB2FWCKutwMmS6nY  The Beatles  1.475037         1.853118   \n",
       "88   3VgxeWOGdUYvtX1j8C9VyV  The Beatles  1.393697         1.708599   \n",
       "107  6ZrPbHp9kRmQj1tGLvna8U  The Beatles  1.270327         0.874479   \n",
       "73   5H9q6ctIlamkqukdTrNt3k  The Beatles  1.261539         2.616693   \n",
       "23   0mNQUZEATk2uItMUtiLWK5  The Beatles  1.213645         1.615224   \n",
       "111  0ttMfoND7IQqFSMVOPkELC  The Beatles  1.212148         0.799772   \n",
       "160  5ou2BiQ9FxIYkxsYvYHpAT  The Beatles  1.210378         1.648037   \n",
       "10   1alcPfZWUHh01l4Fnoo5Jt  The Beatles  1.203416         1.332561   \n",
       "220  2Iccm3cKBQHWt5yk0yX9nh  The Beatles  1.200158         1.530785   \n",
       "27   1dfuJYDSIc41cw5RPsaCF1  The Beatles  1.187438         1.651824   \n",
       "\n",
       "                                     name       neg  valence  \n",
       "4      Ticket To Ride - Live / Remastered  0.825439   0.4050  \n",
       "88         I'm So Tired - Remastered 2009  0.892489   0.6300  \n",
       "107        Revolution 9 - Remastered 2009  0.873285   0.0963  \n",
       "73          Her Majesty - Remastered 2009  0.556608   0.4900  \n",
       "23   A Hard Day's Night - Remastered 2015  0.833309   0.7520  \n",
       "111        Blue Jay Way - Remastered 2009  0.812490   0.0380  \n",
       "160               Help! - Remastered 2009  0.823915   0.7610  \n",
       "10              Help! - Live / Remastered  0.823915   0.5150  \n",
       "220    Please Please Me - Remastered 2009  0.833068   0.7080  \n",
       "27                Help! - Remastered 2015  0.823915   0.8100  "
      ]
     },
     "execution_count": 98,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pipeline = [\n",
    "    {'$match': {'lyrics': {'$exists': True}, 'sentiment': {'$exists': True}, 'valence': {'$exists': True},\n",
    "               'artist_id': beatles_id}},\n",
    "    {'$project': {'artist_name': '$artist_name',\n",
    "                  'name': '$name',\n",
    "                  'valence': '$valence',\n",
    "                  'neg': '$sentiment.probability.neg',\n",
    "                  'lyrical_density': '$lyrical_density',\n",
    "                  'gloom': {'$divide': [{'$add': [{'$subtract': [1, '$valence']},\n",
    "                                                  {'$multiply': ['$sentiment.probability.neg', \n",
    "                                                                 {'$add': ['$lyrical_density', 1]}]}]}, \n",
    "                                        2]}}}]\n",
    "results = pd.DataFrame(list(tracks.aggregate(pipeline)))\n",
    "results.sort_values('gloom', ascending=False).head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Revised gloom index<a name=\"revisedgloomindex\"></a>\n",
    "I don't like the calculation for gloom index. If the point of \"lyrical density\" is to scale the gloom index between valence and sentiment, depending on how many words are in the song. Let's do that weighting properly.\n",
    "\n",
    "$$gloom = \\frac{(1 - normedLyricDensity)\\times(1 - valence) + normedLyricDensity \\times negativity }{2}$$\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 99,
   "metadata": {
    "collapsed": false,
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   },
   "outputs": [
    {
     "data": {
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       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>lyrical_density</th>\n",
       "      <th>name</th>\n",
       "      <th>neg</th>\n",
       "      <th>valence</th>\n",
       "      <th>scaled_ld</th>\n",
       "      <th>gloom</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>258</th>\n",
       "      <td>4gq2bc2770XvbJdEtfUbmw</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.201546</td>\n",
       "      <td>Go Slowly</td>\n",
       "      <td>0.723774</td>\n",
       "      <td>0.0453</td>\n",
       "      <td>0.039619</td>\n",
       "      <td>0.472775</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>309</th>\n",
       "      <td>75YUnz58ajMo2VIIuUFvOV</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.248061</td>\n",
       "      <td>The Tourist</td>\n",
       "      <td>0.667864</td>\n",
       "      <td>0.0400</td>\n",
       "      <td>0.056658</td>\n",
       "      <td>0.471724</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>246</th>\n",
       "      <td>01ZpFhrMMqKPVCwyqXneVp</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.218723</td>\n",
       "      <td>True Love Waits</td>\n",
       "      <td>0.532206</td>\n",
       "      <td>0.0378</td>\n",
       "      <td>0.045911</td>\n",
       "      <td>0.471229</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>268</th>\n",
       "      <td>5olWalQH1oVza5D6xJg4oX</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.216752</td>\n",
       "      <td>Sail To The Moon</td>\n",
       "      <td>0.605798</td>\n",
       "      <td>0.0458</td>\n",
       "      <td>0.045189</td>\n",
       "      <td>0.469228</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>272</th>\n",
       "      <td>53RYTfkLiyZuUZHwJC3Wmm</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.276367</td>\n",
       "      <td>We Suck Young Blood</td>\n",
       "      <td>0.535358</td>\n",
       "      <td>0.0378</td>\n",
       "      <td>0.067027</td>\n",
       "      <td>0.466795</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>205</th>\n",
       "      <td>4sLGaMl33I6mcsk7u4xHAU</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.146307</td>\n",
       "      <td>Codex</td>\n",
       "      <td>0.637942</td>\n",
       "      <td>0.0629</td>\n",
       "      <td>0.019385</td>\n",
       "      <td>0.465650</td>\n",
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       "    <tr>\n",
       "      <th>112</th>\n",
       "      <td>0ttMfoND7IQqFSMVOPkELC</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.799772</td>\n",
       "      <td>Blue Jay Way - Remastered 2009</td>\n",
       "      <td>0.812490</td>\n",
       "      <td>0.0380</td>\n",
       "      <td>0.258755</td>\n",
       "      <td>0.461657</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>297</th>\n",
       "      <td>0COiZ7ncho2yi4HotbzgPv</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.349157</td>\n",
       "      <td>Motion Picture Soundtrack</td>\n",
       "      <td>0.576808</td>\n",
       "      <td>0.0425</td>\n",
       "      <td>0.093690</td>\n",
       "      <td>0.460916</td>\n",
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       "    <tr>\n",
       "      <th>256</th>\n",
       "      <td>3uxhyRdWVXp7GQvERQl6fA</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.382643</td>\n",
       "      <td>Videotape</td>\n",
       "      <td>0.652962</td>\n",
       "      <td>0.0468</td>\n",
       "      <td>0.105957</td>\n",
       "      <td>0.460694</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>318</th>\n",
       "      <td>7wB2VenWR6rchtLwawreIg</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.359311</td>\n",
       "      <td>Bullet Proof ... I Wish I Was</td>\n",
       "      <td>0.804636</td>\n",
       "      <td>0.0781</td>\n",
       "      <td>0.097410</td>\n",
       "      <td>0.455239</td>\n",
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      "text/plain": [
       "                        _id  artist_name  lyrical_density  \\\n",
       "258  4gq2bc2770XvbJdEtfUbmw    Radiohead         0.201546   \n",
       "309  75YUnz58ajMo2VIIuUFvOV    Radiohead         0.248061   \n",
       "246  01ZpFhrMMqKPVCwyqXneVp    Radiohead         0.218723   \n",
       "268  5olWalQH1oVza5D6xJg4oX    Radiohead         0.216752   \n",
       "272  53RYTfkLiyZuUZHwJC3Wmm    Radiohead         0.276367   \n",
       "205  4sLGaMl33I6mcsk7u4xHAU    Radiohead         0.146307   \n",
       "112  0ttMfoND7IQqFSMVOPkELC  The Beatles         0.799772   \n",
       "297  0COiZ7ncho2yi4HotbzgPv    Radiohead         0.349157   \n",
       "256  3uxhyRdWVXp7GQvERQl6fA    Radiohead         0.382643   \n",
       "318  7wB2VenWR6rchtLwawreIg    Radiohead         0.359311   \n",
       "\n",
       "                               name       neg  valence  scaled_ld     gloom  \n",
       "258                       Go Slowly  0.723774   0.0453   0.039619  0.472775  \n",
       "309                     The Tourist  0.667864   0.0400   0.056658  0.471724  \n",
       "246                 True Love Waits  0.532206   0.0378   0.045911  0.471229  \n",
       "268                Sail To The Moon  0.605798   0.0458   0.045189  0.469228  \n",
       "272             We Suck Young Blood  0.535358   0.0378   0.067027  0.466795  \n",
       "205                           Codex  0.637942   0.0629   0.019385  0.465650  \n",
       "112  Blue Jay Way - Remastered 2009  0.812490   0.0380   0.258755  0.461657  \n",
       "297       Motion Picture Soundtrack  0.576808   0.0425   0.093690  0.460916  \n",
       "256                       Videotape  0.652962   0.0468   0.105957  0.460694  \n",
       "318   Bullet Proof ... I Wish I Was  0.804636   0.0781   0.097410  0.455239  "
      ]
     },
     "execution_count": 99,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pipeline = [\n",
    "    {'$match': {'lyrics': {'$exists': True}, 'sentiment': {'$exists': True}, 'valence': {'$exists': True}}},\n",
    "    {'$project': {'artist_name': '$artist_name',\n",
    "                  'name': '$name',\n",
    "                  'valence': '$valence',\n",
    "                  'neg': '$sentiment.probability.neg',\n",
    "                  'lyrical_density': '$lyrical_density'}}]\n",
    "results = pd.DataFrame(list(tracks.aggregate(pipeline)))\n",
    "\n",
    "# Use pandas to scale the lyrical density values to the range 0 -1\n",
    "results['scaled_ld'] = (results['lyrical_density'] - results['lyrical_density'].min()) / \\\n",
    "    (results['lyrical_density'].max() - results['lyrical_density'].min())\n",
    "\n",
    "# Define a Python function to calculate the revised gloom index\n",
    "def gloom(row):\n",
    "    w_valence = (1 - row['valence']) * (1 - row['scaled_ld'])\n",
    "    w_neg = row['neg'] * row['scaled_ld']\n",
    "    return (w_valence + w_neg) / 2\n",
    "\n",
    "# Apply this function to create a new column\n",
    "results['gloom'] = results.apply(gloom, axis=1)\n",
    "\n",
    "# Push the results back into the database\n",
    "for row in results.itertuples():\n",
    "    tracks.update_one({'_id': row[1]}, {'$set': {'gloom': row.gloom}})\n",
    "\n",
    "results.sort_values('gloom', ascending=False).head(10)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 100,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
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       "      <th>258</th>\n",
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       "      <th>309</th>\n",
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       "      <td>0.248061</td>\n",
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       "      <th>246</th>\n",
       "      <td>01ZpFhrMMqKPVCwyqXneVp</td>\n",
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       "      <td>0.471229</td>\n",
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       "    <tr>\n",
       "      <th>268</th>\n",
       "      <td>5olWalQH1oVza5D6xJg4oX</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.216752</td>\n",
       "      <td>Sail To The Moon</td>\n",
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       "    <tr>\n",
       "      <th>272</th>\n",
       "      <td>53RYTfkLiyZuUZHwJC3Wmm</td>\n",
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       "      <td>We Suck Young Blood</td>\n",
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       "      <td>0.0378</td>\n",
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       "      <td>0.466795</td>\n",
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       "    <tr>\n",
       "      <th>205</th>\n",
       "      <td>4sLGaMl33I6mcsk7u4xHAU</td>\n",
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       "      <td>0.146307</td>\n",
       "      <td>Codex</td>\n",
       "      <td>0.637942</td>\n",
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       "      <td>0.465650</td>\n",
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       "      <th>297</th>\n",
       "      <td>0COiZ7ncho2yi4HotbzgPv</td>\n",
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       "      <td>Motion Picture Soundtrack</td>\n",
       "      <td>0.576808</td>\n",
       "      <td>0.0425</td>\n",
       "      <td>0.093690</td>\n",
       "      <td>0.460916</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>256</th>\n",
       "      <td>3uxhyRdWVXp7GQvERQl6fA</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.382643</td>\n",
       "      <td>Videotape</td>\n",
       "      <td>0.652962</td>\n",
       "      <td>0.0468</td>\n",
       "      <td>0.105957</td>\n",
       "      <td>0.460694</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>318</th>\n",
       "      <td>7wB2VenWR6rchtLwawreIg</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.359311</td>\n",
       "      <td>Bullet Proof ... I Wish I Was</td>\n",
       "      <td>0.804636</td>\n",
       "      <td>0.0781</td>\n",
       "      <td>0.097410</td>\n",
       "      <td>0.455239</td>\n",
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       "    <tr>\n",
       "      <th>289</th>\n",
       "      <td>5AiNZnMDCWwujIENPj9PV9</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.489208</td>\n",
       "      <td>Everything In Its Right Place</td>\n",
       "      <td>0.716829</td>\n",
       "      <td>0.0585</td>\n",
       "      <td>0.144992</td>\n",
       "      <td>0.454462</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
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      "text/plain": [
       "                        _id artist_name  lyrical_density  \\\n",
       "258  4gq2bc2770XvbJdEtfUbmw   Radiohead         0.201546   \n",
       "309  75YUnz58ajMo2VIIuUFvOV   Radiohead         0.248061   \n",
       "246  01ZpFhrMMqKPVCwyqXneVp   Radiohead         0.218723   \n",
       "268  5olWalQH1oVza5D6xJg4oX   Radiohead         0.216752   \n",
       "272  53RYTfkLiyZuUZHwJC3Wmm   Radiohead         0.276367   \n",
       "205  4sLGaMl33I6mcsk7u4xHAU   Radiohead         0.146307   \n",
       "297  0COiZ7ncho2yi4HotbzgPv   Radiohead         0.349157   \n",
       "256  3uxhyRdWVXp7GQvERQl6fA   Radiohead         0.382643   \n",
       "318  7wB2VenWR6rchtLwawreIg   Radiohead         0.359311   \n",
       "289  5AiNZnMDCWwujIENPj9PV9   Radiohead         0.489208   \n",
       "\n",
       "                              name       neg  valence  scaled_ld     gloom  \n",
       "258                      Go Slowly  0.723774   0.0453   0.039619  0.472775  \n",
       "309                    The Tourist  0.667864   0.0400   0.056658  0.471724  \n",
       "246                True Love Waits  0.532206   0.0378   0.045911  0.471229  \n",
       "268               Sail To The Moon  0.605798   0.0458   0.045189  0.469228  \n",
       "272            We Suck Young Blood  0.535358   0.0378   0.067027  0.466795  \n",
       "205                          Codex  0.637942   0.0629   0.019385  0.465650  \n",
       "297      Motion Picture Soundtrack  0.576808   0.0425   0.093690  0.460916  \n",
       "256                      Videotape  0.652962   0.0468   0.105957  0.460694  \n",
       "318  Bullet Proof ... I Wish I Was  0.804636   0.0781   0.097410  0.455239  \n",
       "289  Everything In Its Right Place  0.716829   0.0585   0.144992  0.454462  "
      ]
     },
     "execution_count": 100,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results[results['artist_name'] == 'Radiohead'].sort_values('gloom', ascending=False).head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "This still isn't the same as the original list, though there are now two songs in common!\n",
    "\n",
    "\n",
    "  | gloom_index |               track_name\n",
    "--|-------------|--------------------------\n",
    "1 |        1.00 |           True Love Waits\n",
    "2 |        6.46 |        Give Up The Ghost\n",
    "3 |        9.35 | Motion Picture Soundtrack\n",
    "4 |       13.70 |                 Let Down\n",
    "5 |       14.15 |             Pyramid Song\n",
    "6 |       14.57 |  Exit Music (For a Film)\n",
    "7 |       15.29 |          Dollars & Cents\n",
    "8 |       15.69 |              High And Dry\n",
    "9 |       15.80 | Tinker Tailor Soldier ...\n",
    "10|       16.03 |                Videotape\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 101,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
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       "      <td>0.028026</td>\n",
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       "      <td>0.195947</td>\n",
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       "      <th>146</th>\n",
       "      <td>0agoaPIy92gPZ6zRhqXarE</td>\n",
       "      <td>The Beatles</td>\n",
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       "      <td>Tomorrow Never Knows - Remastered 2009</td>\n",
       "      <td>0.343599</td>\n",
       "      <td>0.0556</td>\n",
       "      <td>0.198372</td>\n",
       "      <td>0.412609</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>103</th>\n",
       "      <td>27YZJHyTTDIurMqDu1v2ef</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.429399</td>\n",
       "      <td>Long, Long, Long - Remastered 2009</td>\n",
       "      <td>0.524122</td>\n",
       "      <td>0.1350</td>\n",
       "      <td>0.123084</td>\n",
       "      <td>0.411522</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>65</th>\n",
       "      <td>4cLoL5KPfE1hAwfsO84FX7</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.325955</td>\n",
       "      <td>Because - Remastered 2009</td>\n",
       "      <td>0.466254</td>\n",
       "      <td>0.1620</td>\n",
       "      <td>0.085191</td>\n",
       "      <td>0.403165</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>66</th>\n",
       "      <td>71Ij3VBYQWMrng61Ae4tBu</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.592658</td>\n",
       "      <td>You Never Give Me Your Money - Remastered 2009</td>\n",
       "      <td>0.753448</td>\n",
       "      <td>0.2260</td>\n",
       "      <td>0.182887</td>\n",
       "      <td>0.385121</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>67</th>\n",
       "      <td>3jPXnX4SskFgAcC4YBKOwN</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.273472</td>\n",
       "      <td>Sun King - Remastered 2009</td>\n",
       "      <td>0.300809</td>\n",
       "      <td>0.1970</td>\n",
       "      <td>0.065966</td>\n",
       "      <td>0.384936</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>43</th>\n",
       "      <td>7iABnSNZciNepqGtjMQxxd</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.800176</td>\n",
       "      <td>Come Together - Remastered 2015</td>\n",
       "      <td>0.562552</td>\n",
       "      <td>0.1780</td>\n",
       "      <td>0.258903</td>\n",
       "      <td>0.377414</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                        _id  artist_name  lyrical_density  \\\n",
       "112  0ttMfoND7IQqFSMVOPkELC  The Beatles         0.799772   \n",
       "108  6ZrPbHp9kRmQj1tGLvna8U  The Beatles         0.874479   \n",
       "0    2ucFulEWapRAmTn7l6f5Q7  The Beatles         0.169898   \n",
       "132  3ZFBeIyP41HhnALjxWy1pR  The Beatles         0.628310   \n",
       "146  0agoaPIy92gPZ6zRhqXarE  The Beatles         0.634931   \n",
       "103  27YZJHyTTDIurMqDu1v2ef  The Beatles         0.429399   \n",
       "65   4cLoL5KPfE1hAwfsO84FX7  The Beatles         0.325955   \n",
       "66   71Ij3VBYQWMrng61Ae4tBu  The Beatles         0.592658   \n",
       "67   3jPXnX4SskFgAcC4YBKOwN  The Beatles         0.273472   \n",
       "43   7iABnSNZciNepqGtjMQxxd  The Beatles         0.800176   \n",
       "\n",
       "                                               name       neg  valence  \\\n",
       "112                  Blue Jay Way - Remastered 2009  0.812490   0.0380   \n",
       "108                  Revolution 9 - Remastered 2009  0.873285   0.0963   \n",
       "0                  Wild Honey Pie - Remastered 2009  0.391178   0.1530   \n",
       "132             A Day In The Life - Remastered 2009  0.781296   0.1620   \n",
       "146          Tomorrow Never Knows - Remastered 2009  0.343599   0.0556   \n",
       "103              Long, Long, Long - Remastered 2009  0.524122   0.1350   \n",
       "65                        Because - Remastered 2009  0.466254   0.1620   \n",
       "66   You Never Give Me Your Money - Remastered 2009  0.753448   0.2260   \n",
       "67                       Sun King - Remastered 2009  0.300809   0.1970   \n",
       "43                  Come Together - Remastered 2015  0.562552   0.1780   \n",
       "\n",
       "     scaled_ld     gloom  \n",
       "112   0.258755  0.461657  \n",
       "108   0.286121  0.447499  \n",
       "0     0.028026  0.417113  \n",
       "132   0.195947  0.413445  \n",
       "146   0.198372  0.412609  \n",
       "103   0.123084  0.411522  \n",
       "65    0.085191  0.403165  \n",
       "66    0.182887  0.385121  \n",
       "67    0.065966  0.384936  \n",
       "43    0.258903  0.377414  "
      ]
     },
     "execution_count": 101,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results[results['artist_name'] == 'The Beatles'].sort_values('gloom', ascending=False).head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "I don't know the Radiohead corpus, but I know some Beatles songs. _Blue Jay Way_ is pretty sad, as is _A Day in the Life_. _Revolution 9_ and _Wild Honey Pie_ are just... odd, rather than sad. It's suspicious that some obviously sad Beatles songs are missing. What does this analysis think of unequivocally sad songs like _She's Leaving Home_, _Yesterday_, and _Eleanor Rigby_?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 102,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
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       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
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       "      <td>0.336673</td>\n",
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       "      <th>34</th>\n",
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       "      <td>Eleanor Rigby - Remastered 2015</td>\n",
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       "      <td>0.562401</td>\n",
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      "text/plain": [
       "                        _id  artist_name  lyrical_density  \\\n",
       "29   63uskN0xLezVg4281wzeQn  The Beatles         1.005426   \n",
       "125  1Ipl1kvks5s6GKn6oqgzeY  The Beatles         1.064324   \n",
       "34   0TRkjwb4uY3CHb5zhr9bBd  The Beatles         1.628703   \n",
       "\n",
       "                                     name       neg  valence  scaled_ld  \\\n",
       "29            Yesterday - Remastered 2015  0.852156    0.348   0.334088   \n",
       "125  She's Leaving Home - Remastered 2009  0.764553    0.377   0.355663   \n",
       "34        Eleanor Rigby - Remastered 2015  0.803232    0.845   0.562401   \n",
       "\n",
       "        gloom  \n",
       "29   0.359435  \n",
       "125  0.336673  \n",
       "34   0.259783  "
      ]
     },
     "execution_count": 102,
     "metadata": {},
     "output_type": "execute_result"
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   ],
   "source": [
    "slh = tracks.find_one({'ctitle': 'shes leaving home'})['_id']\n",
    "yd = tracks.find_one({'ctitle': 'yesterday'})['_id']\n",
    "er = tracks.find_one({'ctitle': 'eleanor rigby'})['_id']\n",
    "results[results['_id'].isin([slh, yd, er])].sort_values('gloom', ascending=False)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Glee index: anti-gloom<a name=\"gleeindex\"></a>\n",
    "Rather than looking at the saddest songs, how about using the same data to find the happiest songs?\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 103,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
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       "      <th>84</th>\n",
       "      <td>3fuEJBCK3kWnJHFTODR4cb</td>\n",
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       "      <td>0.555112</td>\n",
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       "      <td>0.961</td>\n",
       "      <td>0.136198</td>\n",
       "      <td>0.069540</td>\n",
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       "    <tr>\n",
       "      <th>97</th>\n",
       "      <td>4KIXWIzNcKzorNDgvMQwmD</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.631592</td>\n",
       "      <td>Birthday - Remastered 2009</td>\n",
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       "      <td>0.916</td>\n",
       "      <td>0.197149</td>\n",
       "      <td>0.070560</td>\n",
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       "    <tr>\n",
       "      <th>210</th>\n",
       "      <td>7cPPyMrSAQY7A686Cn9eUP</td>\n",
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       "      <td>0.891649</td>\n",
       "      <td>All My Loving - Remastered 2009</td>\n",
       "      <td>0.235023</td>\n",
       "      <td>0.891</td>\n",
       "      <td>0.292411</td>\n",
       "      <td>0.072925</td>\n",
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       "    <tr>\n",
       "      <th>187</th>\n",
       "      <td>3EbGioQyKyf4dycuiPOg3k</td>\n",
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       "      <td>Everybody's Trying To Be My Baby - Remastered ...</td>\n",
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       "      <td>0.937</td>\n",
       "      <td>0.126365</td>\n",
       "      <td>0.082298</td>\n",
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       "      <th>56</th>\n",
       "      <td>0cJ053ljI4BuP5P8tJnK5j</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.893485</td>\n",
       "      <td>For You Blue - Remastered 2009</td>\n",
       "      <td>0.471827</td>\n",
       "      <td>0.958</td>\n",
       "      <td>0.293083</td>\n",
       "      <td>0.083988</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>216</th>\n",
       "      <td>6xJSJpO6HJwHhu7UaIc8qR</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.585885</td>\n",
       "      <td>Hold Me Tight - Remastered 2009</td>\n",
       "      <td>0.804870</td>\n",
       "      <td>0.963</td>\n",
       "      <td>0.180406</td>\n",
       "      <td>0.087764</td>\n",
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       "    <tr>\n",
       "      <th>48</th>\n",
       "      <td>72Ob0wrObCXgvGYhFs8vip</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.938049</td>\n",
       "      <td>Across The Universe - Remastered 2009</td>\n",
       "      <td>0.295525</td>\n",
       "      <td>0.862</td>\n",
       "      <td>0.309408</td>\n",
       "      <td>0.093370</td>\n",
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       "    <tr>\n",
       "      <th>141</th>\n",
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       "      <td>0.879719</td>\n",
       "      <td>And Your Bird Can Sing - Remastered 2009</td>\n",
       "      <td>0.582875</td>\n",
       "      <td>0.966</td>\n",
       "      <td>0.288041</td>\n",
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       "                        _id  artist_name  lyrical_density  \\\n",
       "84   3fuEJBCK3kWnJHFTODR4cb  The Beatles         1.608806   \n",
       "78   3TEbDhNDU4NDXq0h86nGZ7  The Beatles         1.008850   \n",
       "220  5VsIn7QQqcacePIb0vO0ow  The Beatles         0.465201   \n",
       "97   4KIXWIzNcKzorNDgvMQwmD  The Beatles         0.631592   \n",
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       "187  3EbGioQyKyf4dycuiPOg3k  The Beatles         0.438356   \n",
       "56   0cJ053ljI4BuP5P8tJnK5j  The Beatles         0.893485   \n",
       "216  6xJSJpO6HJwHhu7UaIc8qR  The Beatles         0.585885   \n",
       "48   72Ob0wrObCXgvGYhFs8vip  The Beatles         0.938049   \n",
       "141  6RdvhWyzCULNTHcMbAXwXK  The Beatles         0.879719   \n",
       "\n",
       "                                                  name       neg  valence  \\\n",
       "84                Ob-La-Di, Ob-La-Da - Remastered 2009  0.080969    0.975   \n",
       "78                       Hey Bulldog - Remastered 2009  0.239198    0.942   \n",
       "220                Not A Second Time - Remastered 2009  0.773805    0.961   \n",
       "97                          Birthday - Remastered 2009  0.373731    0.916   \n",
       "210                    All My Loving - Remastered 2009  0.235023    0.891   \n",
       "187  Everybody's Trying To Be My Baby - Remastered ...  0.866985    0.937   \n",
       "56                      For You Blue - Remastered 2009  0.471827    0.958   \n",
       "216                    Hold Me Tight - Remastered 2009  0.804870    0.963   \n",
       "48               Across The Universe - Remastered 2009  0.295525    0.862   \n",
       "141           And Your Bird Can Sing - Remastered 2009  0.582875    0.966   \n",
       "\n",
       "     scaled_ld     gloom  \n",
       "84    0.555112  0.028035  \n",
       "78    0.335342  0.059382  \n",
       "220   0.136198  0.069540  \n",
       "97    0.197149  0.070560  \n",
       "210   0.292411  0.072925  \n",
       "187   0.126365  0.082298  \n",
       "56    0.293083  0.083988  \n",
       "216   0.180406  0.087764  \n",
       "48    0.309408  0.093370  \n",
       "141   0.288041  0.096049  "
      ]
     },
     "execution_count": 103,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results.sort_values('gloom', ascending=True).head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "All the top ten most gleeful songs are from The Beatles!\n",
    "\n",
    "What about the most gleeful Radiohead songs?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 104,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
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       "      <td>0.148717</td>\n",
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       "      <td>0.126532</td>\n",
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       "      <th>255</th>\n",
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       "      <td>Jigsaw Falling Into Place</td>\n",
       "      <td>0.757225</td>\n",
       "      <td>0.818</td>\n",
       "      <td>0.314597</td>\n",
       "      <td>0.181482</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>263</th>\n",
       "      <td>6P67UTTr5qN7XYSSlj0n6X</td>\n",
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       "      <td>0.503609</td>\n",
       "      <td>Paperbag Writer</td>\n",
       "      <td>0.754680</td>\n",
       "      <td>0.704</td>\n",
       "      <td>0.150268</td>\n",
       "      <td>0.182462</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>298</th>\n",
       "      <td>3OsUjkcv1C1v5udFhgRSFg</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.329999</td>\n",
       "      <td>Airbag</td>\n",
       "      <td>0.642348</td>\n",
       "      <td>0.642</td>\n",
       "      <td>0.086673</td>\n",
       "      <td>0.191323</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>304</th>\n",
       "      <td>53aFGAl0Vebwp2bo8wtdWR</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>2.019892</td>\n",
       "      <td>Fitter Happier</td>\n",
       "      <td>0.446841</td>\n",
       "      <td>0.728</td>\n",
       "      <td>0.705697</td>\n",
       "      <td>0.197693</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>264</th>\n",
       "      <td>3STByesnbcQatiGHgwi1Tv</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.622541</td>\n",
       "      <td>I Am a Wicked Child</td>\n",
       "      <td>0.763706</td>\n",
       "      <td>0.688</td>\n",
       "      <td>0.193834</td>\n",
       "      <td>0.199778</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>236</th>\n",
       "      <td>3pcCifdPTc2BbqmWpEhtUd</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.439692</td>\n",
       "      <td>Burn the Witch</td>\n",
       "      <td>0.582602</td>\n",
       "      <td>0.625</td>\n",
       "      <td>0.126854</td>\n",
       "      <td>0.200668</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                        _id artist_name  lyrical_density  \\\n",
       "1    0eECFDnWy0RdjMmJ8NOeAL   Radiohead         0.093389   \n",
       "247  6dsq7Nt5mIFzvm5kIYNORy   Radiohead         0.674272   \n",
       "274  77SPrxY5gn6VPrKPGrfLnM   Radiohead         0.438813   \n",
       "269  6CVdTDYoDbwYj4xn8u5Gha   Radiohead         0.452573   \n",
       "255  15ea10YpJIl3mJq75yzqsD   Radiohead         0.952216   \n",
       "263  6P67UTTr5qN7XYSSlj0n6X   Radiohead         0.503609   \n",
       "298  3OsUjkcv1C1v5udFhgRSFg   Radiohead         0.329999   \n",
       "304  53aFGAl0Vebwp2bo8wtdWR   Radiohead         2.019892   \n",
       "264  3STByesnbcQatiGHgwi1Tv   Radiohead         0.622541   \n",
       "236  3pcCifdPTc2BbqmWpEhtUd   Radiohead         0.439692   \n",
       "\n",
       "                          name       neg  valence  scaled_ld     gloom  \n",
       "1                        Feral  0.465216    0.751   0.000000  0.124500  \n",
       "247                    15 Step  0.835488    0.848   0.212783  0.148717  \n",
       "274               There, There  0.835541    0.726   0.126532  0.172527  \n",
       "269                 Backdrifts  0.821532    0.724   0.131573  0.173889  \n",
       "255  Jigsaw Falling Into Place  0.757225    0.818   0.314597  0.181482  \n",
       "263            Paperbag Writer  0.754680    0.704   0.150268  0.182462  \n",
       "298                     Airbag  0.642348    0.642   0.086673  0.191323  \n",
       "304             Fitter Happier  0.446841    0.728   0.705697  0.197693  \n",
       "264        I Am a Wicked Child  0.763706    0.688   0.193834  0.199778  \n",
       "236             Burn the Witch  0.582602    0.625   0.126854  0.200668  "
      ]
     },
     "execution_count": 104,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results[results['artist_name'] == 'Radiohead'].sort_values('gloom', ascending=True).head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Contrasting songs<a name=\"valencenegcontrast\"></a>\n",
    "Going back to the scatter plot of negativity against valence, there are some songs with a high valence (i.e. sound happy) with a high negativity (i.e. sad words). This seems unusual. What songs are they?\n",
    "\n",
    "* [Top](#top)\n",
    "\n",
    "These are the songs I mean:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 105,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
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hodBVE8VjaTfS6FzVyXvctIftyOHnz/08tPz5BDGbmPKuDGzkiK7Gih27kFjd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\nlIiCEARBEJT8f2yXnXTotlJgAAAAAElFTkSuQmCC\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622ab50c50>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "plt.scatter(beatles_df['valence'], beatles_df['neg'], color='blue')\n",
    "plt.scatter(radiohead_df['valence'], radiohead_df['neg'], color='red')\n",
    "plt.xlabel('Valence')\n",
    "plt.ylabel('Sentiment negativity')\n",
    "\n",
    "ax = plt.gca()\n",
    "circ = plt.Circle((0.9, 0.8), radius=0.15, color='g', fill=False, linewidth=5)\n",
    "ax.add_patch(circ)\n",
    "\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 106,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>lyrical_density</th>\n",
       "      <th>name</th>\n",
       "      <th>neg</th>\n",
       "      <th>valence</th>\n",
       "      <th>scaled_ld</th>\n",
       "      <th>gloom</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>23</th>\n",
       "      <td>7pQAq14Z73YUFMtxCyt0bG</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.516618</td>\n",
       "      <td>Can't Buy Me Love - Remastered 2015</td>\n",
       "      <td>0.738387</td>\n",
       "      <td>0.957</td>\n",
       "      <td>0.521343</td>\n",
       "      <td>0.202768</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>28</th>\n",
       "      <td>1dfuJYDSIc41cw5RPsaCF1</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.651824</td>\n",
       "      <td>Help! - Remastered 2015</td>\n",
       "      <td>0.823915</td>\n",
       "      <td>0.810</td>\n",
       "      <td>0.570870</td>\n",
       "      <td>0.275942</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>34</th>\n",
       "      <td>0TRkjwb4uY3CHb5zhr9bBd</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.628703</td>\n",
       "      <td>Eleanor Rigby - Remastered 2015</td>\n",
       "      <td>0.803232</td>\n",
       "      <td>0.845</td>\n",
       "      <td>0.562401</td>\n",
       "      <td>0.259783</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>46</th>\n",
       "      <td>57n1teNb2tkcfiYagPmUWr</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.885556</td>\n",
       "      <td>Two Of Us - Remastered 2009</td>\n",
       "      <td>0.711080</td>\n",
       "      <td>0.923</td>\n",
       "      <td>0.290179</td>\n",
       "      <td>0.130498</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>54</th>\n",
       "      <td>4311wT21Et0q3vepFwXjTu</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.718556</td>\n",
       "      <td>One After 909 - Remastered 2009</td>\n",
       "      <td>0.865737</td>\n",
       "      <td>0.904</td>\n",
       "      <td>0.229005</td>\n",
       "      <td>0.136137</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>68</th>\n",
       "      <td>67jL5ZAf8hNsRZrfBHNuBT</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.277562</td>\n",
       "      <td>Mean Mr Mustard - Remastered 2009</td>\n",
       "      <td>0.700631</td>\n",
       "      <td>0.967</td>\n",
       "      <td>0.433774</td>\n",
       "      <td>0.161301</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>93</th>\n",
       "      <td>3OSi8ehmSWLTD5KatlzX8r</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.733338</td>\n",
       "      <td>Don't Pass Me By - Remastered 2009</td>\n",
       "      <td>0.857831</td>\n",
       "      <td>0.948</td>\n",
       "      <td>0.234420</td>\n",
       "      <td>0.120451</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>94</th>\n",
       "      <td>4zExFATo8xg8qFfR4H1ZAn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.364176</td>\n",
       "      <td>Why Don't We Do It In The Road? - Remastered 2009</td>\n",
       "      <td>0.793242</td>\n",
       "      <td>0.951</td>\n",
       "      <td>0.465502</td>\n",
       "      <td>0.197723</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>134</th>\n",
       "      <td>77f3aNeabAbOaSB32Sd5QE</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.620131</td>\n",
       "      <td>Eleanor Rigby - Remastered 2009</td>\n",
       "      <td>0.803232</td>\n",
       "      <td>0.821</td>\n",
       "      <td>0.559261</td>\n",
       "      <td>0.264054</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>168</th>\n",
       "      <td>67tvBtAhsfHBFpuqJ13ZUq</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.924368</td>\n",
       "      <td>Act Naturally - Remastered 2009</td>\n",
       "      <td>0.722619</td>\n",
       "      <td>0.946</td>\n",
       "      <td>0.304396</td>\n",
       "      <td>0.128762</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>170</th>\n",
       "      <td>1k9tpndMDRwLkNt67Dlg02</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.408837</td>\n",
       "      <td>You Like Me Too Much - Remastered 2009</td>\n",
       "      <td>0.773406</td>\n",
       "      <td>0.900</td>\n",
       "      <td>0.481862</td>\n",
       "      <td>0.212244</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>172</th>\n",
       "      <td>67VdmhC89bZ6yK2XRys0lA</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.087652</td>\n",
       "      <td>I've Just Seen A Face - Remastered 2009</td>\n",
       "      <td>0.805204</td>\n",
       "      <td>0.917</td>\n",
       "      <td>0.364208</td>\n",
       "      <td>0.173016</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>175</th>\n",
       "      <td>009oOX7tpCPLzRL9AFiBS8</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.242035</td>\n",
       "      <td>No Reply - Remastered 2009</td>\n",
       "      <td>0.781942</td>\n",
       "      <td>0.873</td>\n",
       "      <td>0.420761</td>\n",
       "      <td>0.201287</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>176</th>\n",
       "      <td>5zs8tSd7ZvwBgr4NUmF5zM</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.959827</td>\n",
       "      <td>I'm A Loser - Remastered 2009</td>\n",
       "      <td>0.812114</td>\n",
       "      <td>0.843</td>\n",
       "      <td>0.317385</td>\n",
       "      <td>0.182462</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>177</th>\n",
       "      <td>3mKtIanz0poYgLnRxZrfBO</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.501767</td>\n",
       "      <td>Baby's In Black - Remastered 2009</td>\n",
       "      <td>0.820088</td>\n",
       "      <td>0.862</td>\n",
       "      <td>0.515903</td>\n",
       "      <td>0.244945</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>185</th>\n",
       "      <td>33BGv6xzxHh5E7v3r1hJLL</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.314197</td>\n",
       "      <td>I Don't Want To Spoil The Party - Remastered 2009</td>\n",
       "      <td>0.817801</td>\n",
       "      <td>0.896</td>\n",
       "      <td>0.447194</td>\n",
       "      <td>0.211604</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>186</th>\n",
       "      <td>2YHzfuuDFXzoELxJnqM4at</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.626500</td>\n",
       "      <td>What You're Doing - Remastered 2009</td>\n",
       "      <td>0.751989</td>\n",
       "      <td>0.831</td>\n",
       "      <td>0.195284</td>\n",
       "      <td>0.141424</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>187</th>\n",
       "      <td>3EbGioQyKyf4dycuiPOg3k</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.438356</td>\n",
       "      <td>Everybody's Trying To Be My Baby - Remastered ...</td>\n",
       "      <td>0.866985</td>\n",
       "      <td>0.937</td>\n",
       "      <td>0.126365</td>\n",
       "      <td>0.082298</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>188</th>\n",
       "      <td>69d54YOS8TOQiUYjX57XeA</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.601816</td>\n",
       "      <td>A Hard Day's Night - Remastered 2009</td>\n",
       "      <td>0.833309</td>\n",
       "      <td>0.802</td>\n",
       "      <td>0.552552</td>\n",
       "      <td>0.274521</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>193</th>\n",
       "      <td>4G5YzDD1nCUPwt5y1LQovF</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.901370</td>\n",
       "      <td>Tell Me Why - Remastered 2009</td>\n",
       "      <td>0.849970</td>\n",
       "      <td>0.819</td>\n",
       "      <td>0.295972</td>\n",
       "      <td>0.189498</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>194</th>\n",
       "      <td>7KmRz1oKEwgj9qpfn72OfO</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.509096</td>\n",
       "      <td>Can't Buy Me Love - Remastered 2009</td>\n",
       "      <td>0.738387</td>\n",
       "      <td>0.854</td>\n",
       "      <td>0.518588</td>\n",
       "      <td>0.226602</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>196</th>\n",
       "      <td>3Aqo28W4LLAolYpN3duVJl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.349222</td>\n",
       "      <td>I'll Cry Instead - Remastered 2009</td>\n",
       "      <td>0.863772</td>\n",
       "      <td>0.961</td>\n",
       "      <td>0.460024</td>\n",
       "      <td>0.209207</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>199</th>\n",
       "      <td>4dyALlslhDEzwSEr7GteXa</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.246021</td>\n",
       "      <td>You Can't Do That - Remastered 2009</td>\n",
       "      <td>0.727456</td>\n",
       "      <td>0.962</td>\n",
       "      <td>0.422221</td>\n",
       "      <td>0.164551</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>208</th>\n",
       "      <td>5tNjuWwp6FxuWCrKQAMBTj</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.959614</td>\n",
       "      <td>It Won't Be Long - Remastered 2009</td>\n",
       "      <td>0.783388</td>\n",
       "      <td>0.868</td>\n",
       "      <td>0.317307</td>\n",
       "      <td>0.169345</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>209</th>\n",
       "      <td>1JPTCjLHEtqofOFmHsfiAH</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.036117</td>\n",
       "      <td>All I've Got To Do - Remastered 2009</td>\n",
       "      <td>0.721191</td>\n",
       "      <td>0.876</td>\n",
       "      <td>0.345331</td>\n",
       "      <td>0.165114</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>211</th>\n",
       "      <td>0lLeGCsQlAbEjQBPQQxQ1b</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.998293</td>\n",
       "      <td>Don't Bother Me - Remastered 2009</td>\n",
       "      <td>0.824879</td>\n",
       "      <td>0.921</td>\n",
       "      <td>0.331476</td>\n",
       "      <td>0.163120</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>212</th>\n",
       "      <td>55nE9EppLFdb0I1HBg2O2m</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.695489</td>\n",
       "      <td>Little Child - Remastered 2009</td>\n",
       "      <td>0.848886</td>\n",
       "      <td>0.878</td>\n",
       "      <td>0.220555</td>\n",
       "      <td>0.141159</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>214</th>\n",
       "      <td>5IIBY9M2GxHcVja6DA6wsF</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.362221</td>\n",
       "      <td>Please Mister Postman - Remastered 2009</td>\n",
       "      <td>0.815201</td>\n",
       "      <td>0.962</td>\n",
       "      <td>0.464786</td>\n",
       "      <td>0.199616</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>216</th>\n",
       "      <td>6xJSJpO6HJwHhu7UaIc8qR</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.585885</td>\n",
       "      <td>Hold Me Tight - Remastered 2009</td>\n",
       "      <td>0.804870</td>\n",
       "      <td>0.963</td>\n",
       "      <td>0.180406</td>\n",
       "      <td>0.087764</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>219</th>\n",
       "      <td>3Ltllbv2lbpjP6NgPMNiFg</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.101133</td>\n",
       "      <td>Devil In Her Heart - Remastered 2009</td>\n",
       "      <td>0.779220</td>\n",
       "      <td>0.964</td>\n",
       "      <td>0.369147</td>\n",
       "      <td>0.155179</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>220</th>\n",
       "      <td>5VsIn7QQqcacePIb0vO0ow</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.465201</td>\n",
       "      <td>Not A Second Time - Remastered 2009</td>\n",
       "      <td>0.773805</td>\n",
       "      <td>0.961</td>\n",
       "      <td>0.136198</td>\n",
       "      <td>0.069540</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>223</th>\n",
       "      <td>33OXG0RTtw0ycGza22tnF6</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.022599</td>\n",
       "      <td>Misery - Remastered 2009</td>\n",
       "      <td>0.814230</td>\n",
       "      <td>0.902</td>\n",
       "      <td>0.340379</td>\n",
       "      <td>0.170895</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>247</th>\n",
       "      <td>6dsq7Nt5mIFzvm5kIYNORy</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.674272</td>\n",
       "      <td>15 Step</td>\n",
       "      <td>0.835488</td>\n",
       "      <td>0.848</td>\n",
       "      <td>0.212783</td>\n",
       "      <td>0.148717</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>255</th>\n",
       "      <td>15ea10YpJIl3mJq75yzqsD</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.952216</td>\n",
       "      <td>Jigsaw Falling Into Place</td>\n",
       "      <td>0.757225</td>\n",
       "      <td>0.818</td>\n",
       "      <td>0.314597</td>\n",
       "      <td>0.181482</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                        _id  artist_name  lyrical_density  \\\n",
       "23   7pQAq14Z73YUFMtxCyt0bG  The Beatles         1.516618   \n",
       "28   1dfuJYDSIc41cw5RPsaCF1  The Beatles         1.651824   \n",
       "34   0TRkjwb4uY3CHb5zhr9bBd  The Beatles         1.628703   \n",
       "46   57n1teNb2tkcfiYagPmUWr  The Beatles         0.885556   \n",
       "54   4311wT21Et0q3vepFwXjTu  The Beatles         0.718556   \n",
       "68   67jL5ZAf8hNsRZrfBHNuBT  The Beatles         1.277562   \n",
       "93   3OSi8ehmSWLTD5KatlzX8r  The Beatles         0.733338   \n",
       "94   4zExFATo8xg8qFfR4H1ZAn  The Beatles         1.364176   \n",
       "134  77f3aNeabAbOaSB32Sd5QE  The Beatles         1.620131   \n",
       "168  67tvBtAhsfHBFpuqJ13ZUq  The Beatles         0.924368   \n",
       "170  1k9tpndMDRwLkNt67Dlg02  The Beatles         1.408837   \n",
       "172  67VdmhC89bZ6yK2XRys0lA  The Beatles         1.087652   \n",
       "175  009oOX7tpCPLzRL9AFiBS8  The Beatles         1.242035   \n",
       "176  5zs8tSd7ZvwBgr4NUmF5zM  The Beatles         0.959827   \n",
       "177  3mKtIanz0poYgLnRxZrfBO  The Beatles         1.501767   \n",
       "185  33BGv6xzxHh5E7v3r1hJLL  The Beatles         1.314197   \n",
       "186  2YHzfuuDFXzoELxJnqM4at  The Beatles         0.626500   \n",
       "187  3EbGioQyKyf4dycuiPOg3k  The Beatles         0.438356   \n",
       "188  69d54YOS8TOQiUYjX57XeA  The Beatles         1.601816   \n",
       "193  4G5YzDD1nCUPwt5y1LQovF  The Beatles         0.901370   \n",
       "194  7KmRz1oKEwgj9qpfn72OfO  The Beatles         1.509096   \n",
       "196  3Aqo28W4LLAolYpN3duVJl  The Beatles         1.349222   \n",
       "199  4dyALlslhDEzwSEr7GteXa  The Beatles         1.246021   \n",
       "208  5tNjuWwp6FxuWCrKQAMBTj  The Beatles         0.959614   \n",
       "209  1JPTCjLHEtqofOFmHsfiAH  The Beatles         1.036117   \n",
       "211  0lLeGCsQlAbEjQBPQQxQ1b  The Beatles         0.998293   \n",
       "212  55nE9EppLFdb0I1HBg2O2m  The Beatles         0.695489   \n",
       "214  5IIBY9M2GxHcVja6DA6wsF  The Beatles         1.362221   \n",
       "216  6xJSJpO6HJwHhu7UaIc8qR  The Beatles         0.585885   \n",
       "219  3Ltllbv2lbpjP6NgPMNiFg  The Beatles         1.101133   \n",
       "220  5VsIn7QQqcacePIb0vO0ow  The Beatles         0.465201   \n",
       "223  33OXG0RTtw0ycGza22tnF6  The Beatles         1.022599   \n",
       "247  6dsq7Nt5mIFzvm5kIYNORy    Radiohead         0.674272   \n",
       "255  15ea10YpJIl3mJq75yzqsD    Radiohead         0.952216   \n",
       "\n",
       "                                                  name       neg  valence  \\\n",
       "23                 Can't Buy Me Love - Remastered 2015  0.738387    0.957   \n",
       "28                             Help! - Remastered 2015  0.823915    0.810   \n",
       "34                     Eleanor Rigby - Remastered 2015  0.803232    0.845   \n",
       "46                         Two Of Us - Remastered 2009  0.711080    0.923   \n",
       "54                     One After 909 - Remastered 2009  0.865737    0.904   \n",
       "68                   Mean Mr Mustard - Remastered 2009  0.700631    0.967   \n",
       "93                  Don't Pass Me By - Remastered 2009  0.857831    0.948   \n",
       "94   Why Don't We Do It In The Road? - Remastered 2009  0.793242    0.951   \n",
       "134                    Eleanor Rigby - Remastered 2009  0.803232    0.821   \n",
       "168                    Act Naturally - Remastered 2009  0.722619    0.946   \n",
       "170             You Like Me Too Much - Remastered 2009  0.773406    0.900   \n",
       "172            I've Just Seen A Face - Remastered 2009  0.805204    0.917   \n",
       "175                         No Reply - Remastered 2009  0.781942    0.873   \n",
       "176                      I'm A Loser - Remastered 2009  0.812114    0.843   \n",
       "177                  Baby's In Black - Remastered 2009  0.820088    0.862   \n",
       "185  I Don't Want To Spoil The Party - Remastered 2009  0.817801    0.896   \n",
       "186                What You're Doing - Remastered 2009  0.751989    0.831   \n",
       "187  Everybody's Trying To Be My Baby - Remastered ...  0.866985    0.937   \n",
       "188               A Hard Day's Night - Remastered 2009  0.833309    0.802   \n",
       "193                      Tell Me Why - Remastered 2009  0.849970    0.819   \n",
       "194                Can't Buy Me Love - Remastered 2009  0.738387    0.854   \n",
       "196                 I'll Cry Instead - Remastered 2009  0.863772    0.961   \n",
       "199                You Can't Do That - Remastered 2009  0.727456    0.962   \n",
       "208                 It Won't Be Long - Remastered 2009  0.783388    0.868   \n",
       "209               All I've Got To Do - Remastered 2009  0.721191    0.876   \n",
       "211                  Don't Bother Me - Remastered 2009  0.824879    0.921   \n",
       "212                     Little Child - Remastered 2009  0.848886    0.878   \n",
       "214            Please Mister Postman - Remastered 2009  0.815201    0.962   \n",
       "216                    Hold Me Tight - Remastered 2009  0.804870    0.963   \n",
       "219               Devil In Her Heart - Remastered 2009  0.779220    0.964   \n",
       "220                Not A Second Time - Remastered 2009  0.773805    0.961   \n",
       "223                           Misery - Remastered 2009  0.814230    0.902   \n",
       "247                                            15 Step  0.835488    0.848   \n",
       "255                          Jigsaw Falling Into Place  0.757225    0.818   \n",
       "\n",
       "     scaled_ld     gloom  \n",
       "23    0.521343  0.202768  \n",
       "28    0.570870  0.275942  \n",
       "34    0.562401  0.259783  \n",
       "46    0.290179  0.130498  \n",
       "54    0.229005  0.136137  \n",
       "68    0.433774  0.161301  \n",
       "93    0.234420  0.120451  \n",
       "94    0.465502  0.197723  \n",
       "134   0.559261  0.264054  \n",
       "168   0.304396  0.128762  \n",
       "170   0.481862  0.212244  \n",
       "172   0.364208  0.173016  \n",
       "175   0.420761  0.201287  \n",
       "176   0.317385  0.182462  \n",
       "177   0.515903  0.244945  \n",
       "185   0.447194  0.211604  \n",
       "186   0.195284  0.141424  \n",
       "187   0.126365  0.082298  \n",
       "188   0.552552  0.274521  \n",
       "193   0.295972  0.189498  \n",
       "194   0.518588  0.226602  \n",
       "196   0.460024  0.209207  \n",
       "199   0.422221  0.164551  \n",
       "208   0.317307  0.169345  \n",
       "209   0.345331  0.165114  \n",
       "211   0.331476  0.163120  \n",
       "212   0.220555  0.141159  \n",
       "214   0.464786  0.199616  \n",
       "216   0.180406  0.087764  \n",
       "219   0.369147  0.155179  \n",
       "220   0.136198  0.069540  \n",
       "223   0.340379  0.170895  \n",
       "247   0.212783  0.148717  \n",
       "255   0.314597  0.181482  "
      ]
     },
     "execution_count": 106,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results[(results['valence'] > 0.8) & (results['neg'] > 0.7)]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "That's interesting. This list contains a lot of the Beatles' most well-known songs. Is there something in this?\n",
    "\n",
    "Let's define \"complexity\" as the product of valence and negativity, and see which are the most complext songs."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 107,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>lyrical_density</th>\n",
       "      <th>name</th>\n",
       "      <th>neg</th>\n",
       "      <th>valence</th>\n",
       "      <th>scaled_ld</th>\n",
       "      <th>gloom</th>\n",
       "      <th>complexity</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>196</th>\n",
       "      <td>3Aqo28W4LLAolYpN3duVJl</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.349222</td>\n",
       "      <td>I'll Cry Instead - Remastered 2009</td>\n",
       "      <td>0.863772</td>\n",
       "      <td>0.961</td>\n",
       "      <td>0.460024</td>\n",
       "      <td>0.209207</td>\n",
       "      <td>0.830085</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>93</th>\n",
       "      <td>3OSi8ehmSWLTD5KatlzX8r</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.733338</td>\n",
       "      <td>Don't Pass Me By - Remastered 2009</td>\n",
       "      <td>0.857831</td>\n",
       "      <td>0.948</td>\n",
       "      <td>0.234420</td>\n",
       "      <td>0.120451</td>\n",
       "      <td>0.813223</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>187</th>\n",
       "      <td>3EbGioQyKyf4dycuiPOg3k</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.438356</td>\n",
       "      <td>Everybody's Trying To Be My Baby - Remastered ...</td>\n",
       "      <td>0.866985</td>\n",
       "      <td>0.937</td>\n",
       "      <td>0.126365</td>\n",
       "      <td>0.082298</td>\n",
       "      <td>0.812365</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>214</th>\n",
       "      <td>5IIBY9M2GxHcVja6DA6wsF</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.362221</td>\n",
       "      <td>Please Mister Postman - Remastered 2009</td>\n",
       "      <td>0.815201</td>\n",
       "      <td>0.962</td>\n",
       "      <td>0.464786</td>\n",
       "      <td>0.199616</td>\n",
       "      <td>0.784223</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>54</th>\n",
       "      <td>4311wT21Et0q3vepFwXjTu</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.718556</td>\n",
       "      <td>One After 909 - Remastered 2009</td>\n",
       "      <td>0.865737</td>\n",
       "      <td>0.904</td>\n",
       "      <td>0.229005</td>\n",
       "      <td>0.136137</td>\n",
       "      <td>0.782626</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>216</th>\n",
       "      <td>6xJSJpO6HJwHhu7UaIc8qR</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.585885</td>\n",
       "      <td>Hold Me Tight - Remastered 2009</td>\n",
       "      <td>0.804870</td>\n",
       "      <td>0.963</td>\n",
       "      <td>0.180406</td>\n",
       "      <td>0.087764</td>\n",
       "      <td>0.775090</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>211</th>\n",
       "      <td>0lLeGCsQlAbEjQBPQQxQ1b</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.998293</td>\n",
       "      <td>Don't Bother Me - Remastered 2009</td>\n",
       "      <td>0.824879</td>\n",
       "      <td>0.921</td>\n",
       "      <td>0.331476</td>\n",
       "      <td>0.163120</td>\n",
       "      <td>0.759713</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>94</th>\n",
       "      <td>4zExFATo8xg8qFfR4H1ZAn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.364176</td>\n",
       "      <td>Why Don't We Do It In The Road? - Remastered 2009</td>\n",
       "      <td>0.793242</td>\n",
       "      <td>0.951</td>\n",
       "      <td>0.465502</td>\n",
       "      <td>0.197723</td>\n",
       "      <td>0.754373</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>219</th>\n",
       "      <td>3Ltllbv2lbpjP6NgPMNiFg</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1.101133</td>\n",
       "      <td>Devil In Her Heart - Remastered 2009</td>\n",
       "      <td>0.779220</td>\n",
       "      <td>0.964</td>\n",
       "      <td>0.369147</td>\n",
       "      <td>0.155179</td>\n",
       "      <td>0.751168</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>212</th>\n",
       "      <td>55nE9EppLFdb0I1HBg2O2m</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.695489</td>\n",
       "      <td>Little Child - Remastered 2009</td>\n",
       "      <td>0.848886</td>\n",
       "      <td>0.878</td>\n",
       "      <td>0.220555</td>\n",
       "      <td>0.141159</td>\n",
       "      <td>0.745322</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                        _id  artist_name  lyrical_density  \\\n",
       "196  3Aqo28W4LLAolYpN3duVJl  The Beatles         1.349222   \n",
       "93   3OSi8ehmSWLTD5KatlzX8r  The Beatles         0.733338   \n",
       "187  3EbGioQyKyf4dycuiPOg3k  The Beatles         0.438356   \n",
       "214  5IIBY9M2GxHcVja6DA6wsF  The Beatles         1.362221   \n",
       "54   4311wT21Et0q3vepFwXjTu  The Beatles         0.718556   \n",
       "216  6xJSJpO6HJwHhu7UaIc8qR  The Beatles         0.585885   \n",
       "211  0lLeGCsQlAbEjQBPQQxQ1b  The Beatles         0.998293   \n",
       "94   4zExFATo8xg8qFfR4H1ZAn  The Beatles         1.364176   \n",
       "219  3Ltllbv2lbpjP6NgPMNiFg  The Beatles         1.101133   \n",
       "212  55nE9EppLFdb0I1HBg2O2m  The Beatles         0.695489   \n",
       "\n",
       "                                                  name       neg  valence  \\\n",
       "196                 I'll Cry Instead - Remastered 2009  0.863772    0.961   \n",
       "93                  Don't Pass Me By - Remastered 2009  0.857831    0.948   \n",
       "187  Everybody's Trying To Be My Baby - Remastered ...  0.866985    0.937   \n",
       "214            Please Mister Postman - Remastered 2009  0.815201    0.962   \n",
       "54                     One After 909 - Remastered 2009  0.865737    0.904   \n",
       "216                    Hold Me Tight - Remastered 2009  0.804870    0.963   \n",
       "211                  Don't Bother Me - Remastered 2009  0.824879    0.921   \n",
       "94   Why Don't We Do It In The Road? - Remastered 2009  0.793242    0.951   \n",
       "219               Devil In Her Heart - Remastered 2009  0.779220    0.964   \n",
       "212                     Little Child - Remastered 2009  0.848886    0.878   \n",
       "\n",
       "     scaled_ld     gloom  complexity  \n",
       "196   0.460024  0.209207    0.830085  \n",
       "93    0.234420  0.120451    0.813223  \n",
       "187   0.126365  0.082298    0.812365  \n",
       "214   0.464786  0.199616    0.784223  \n",
       "54    0.229005  0.136137    0.782626  \n",
       "216   0.180406  0.087764    0.775090  \n",
       "211   0.331476  0.163120    0.759713  \n",
       "94    0.465502  0.197723    0.754373  \n",
       "219   0.369147  0.155179    0.751168  \n",
       "212   0.220555  0.141159    0.745322  "
      ]
     },
     "execution_count": 107,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results['complexity'] = results['valence'] * results['neg']\n",
    "results.sort_values('complexity', ascending=False).head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "There's possibly something in it. The most \"complex\" song has a very upbeat pop tune and very sad lyrics. The others are similarly interesting.\n",
    "\n",
    "What about the least \"complex\" songs?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 108,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>lyrical_density</th>\n",
       "      <th>name</th>\n",
       "      <th>neg</th>\n",
       "      <th>valence</th>\n",
       "      <th>scaled_ld</th>\n",
       "      <th>gloom</th>\n",
       "      <th>complexity</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>243</th>\n",
       "      <td>6f6pEjgfTtuRROmJ4a7Gf3</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.393192</td>\n",
       "      <td>The Numbers</td>\n",
       "      <td>0.292008</td>\n",
       "      <td>0.0545</td>\n",
       "      <td>0.109821</td>\n",
       "      <td>0.436866</td>\n",
       "      <td>0.015914</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>146</th>\n",
       "      <td>0agoaPIy92gPZ6zRhqXarE</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.634931</td>\n",
       "      <td>Tomorrow Never Knows - Remastered 2009</td>\n",
       "      <td>0.343599</td>\n",
       "      <td>0.0556</td>\n",
       "      <td>0.198372</td>\n",
       "      <td>0.412609</td>\n",
       "      <td>0.019104</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>246</th>\n",
       "      <td>01ZpFhrMMqKPVCwyqXneVp</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.218723</td>\n",
       "      <td>True Love Waits</td>\n",
       "      <td>0.532206</td>\n",
       "      <td>0.0378</td>\n",
       "      <td>0.045911</td>\n",
       "      <td>0.471229</td>\n",
       "      <td>0.020117</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>272</th>\n",
       "      <td>53RYTfkLiyZuUZHwJC3Wmm</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.276367</td>\n",
       "      <td>We Suck Young Blood</td>\n",
       "      <td>0.535358</td>\n",
       "      <td>0.0378</td>\n",
       "      <td>0.067027</td>\n",
       "      <td>0.466795</td>\n",
       "      <td>0.020237</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>297</th>\n",
       "      <td>0COiZ7ncho2yi4HotbzgPv</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.349157</td>\n",
       "      <td>Motion Picture Soundtrack</td>\n",
       "      <td>0.576808</td>\n",
       "      <td>0.0425</td>\n",
       "      <td>0.093690</td>\n",
       "      <td>0.460916</td>\n",
       "      <td>0.024514</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>245</th>\n",
       "      <td>3cual6JOG286qZJmCxKRAT</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.332577</td>\n",
       "      <td>Tinker Tailor Soldier Sailor Rich Man Poor Man...</td>\n",
       "      <td>0.477322</td>\n",
       "      <td>0.0517</td>\n",
       "      <td>0.087617</td>\n",
       "      <td>0.453517</td>\n",
       "      <td>0.024678</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>309</th>\n",
       "      <td>75YUnz58ajMo2VIIuUFvOV</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.248061</td>\n",
       "      <td>The Tourist</td>\n",
       "      <td>0.667864</td>\n",
       "      <td>0.0400</td>\n",
       "      <td>0.056658</td>\n",
       "      <td>0.471724</td>\n",
       "      <td>0.026715</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>268</th>\n",
       "      <td>5olWalQH1oVza5D6xJg4oX</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.216752</td>\n",
       "      <td>Sail To The Moon</td>\n",
       "      <td>0.605798</td>\n",
       "      <td>0.0458</td>\n",
       "      <td>0.045189</td>\n",
       "      <td>0.469228</td>\n",
       "      <td>0.027746</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>256</th>\n",
       "      <td>3uxhyRdWVXp7GQvERQl6fA</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>0.382643</td>\n",
       "      <td>Videotape</td>\n",
       "      <td>0.652962</td>\n",
       "      <td>0.0468</td>\n",
       "      <td>0.105957</td>\n",
       "      <td>0.460694</td>\n",
       "      <td>0.030559</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>112</th>\n",
       "      <td>0ttMfoND7IQqFSMVOPkELC</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>0.799772</td>\n",
       "      <td>Blue Jay Way - Remastered 2009</td>\n",
       "      <td>0.812490</td>\n",
       "      <td>0.0380</td>\n",
       "      <td>0.258755</td>\n",
       "      <td>0.461657</td>\n",
       "      <td>0.030875</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                        _id  artist_name  lyrical_density  \\\n",
       "243  6f6pEjgfTtuRROmJ4a7Gf3    Radiohead         0.393192   \n",
       "146  0agoaPIy92gPZ6zRhqXarE  The Beatles         0.634931   \n",
       "246  01ZpFhrMMqKPVCwyqXneVp    Radiohead         0.218723   \n",
       "272  53RYTfkLiyZuUZHwJC3Wmm    Radiohead         0.276367   \n",
       "297  0COiZ7ncho2yi4HotbzgPv    Radiohead         0.349157   \n",
       "245  3cual6JOG286qZJmCxKRAT    Radiohead         0.332577   \n",
       "309  75YUnz58ajMo2VIIuUFvOV    Radiohead         0.248061   \n",
       "268  5olWalQH1oVza5D6xJg4oX    Radiohead         0.216752   \n",
       "256  3uxhyRdWVXp7GQvERQl6fA    Radiohead         0.382643   \n",
       "112  0ttMfoND7IQqFSMVOPkELC  The Beatles         0.799772   \n",
       "\n",
       "                                                  name       neg  valence  \\\n",
       "243                                        The Numbers  0.292008   0.0545   \n",
       "146             Tomorrow Never Knows - Remastered 2009  0.343599   0.0556   \n",
       "246                                    True Love Waits  0.532206   0.0378   \n",
       "272                                We Suck Young Blood  0.535358   0.0378   \n",
       "297                          Motion Picture Soundtrack  0.576808   0.0425   \n",
       "245  Tinker Tailor Soldier Sailor Rich Man Poor Man...  0.477322   0.0517   \n",
       "309                                        The Tourist  0.667864   0.0400   \n",
       "268                                   Sail To The Moon  0.605798   0.0458   \n",
       "256                                          Videotape  0.652962   0.0468   \n",
       "112                     Blue Jay Way - Remastered 2009  0.812490   0.0380   \n",
       "\n",
       "     scaled_ld     gloom  complexity  \n",
       "243   0.109821  0.436866    0.015914  \n",
       "146   0.198372  0.412609    0.019104  \n",
       "246   0.045911  0.471229    0.020117  \n",
       "272   0.067027  0.466795    0.020237  \n",
       "297   0.093690  0.460916    0.024514  \n",
       "245   0.087617  0.453517    0.024678  \n",
       "309   0.056658  0.471724    0.026715  \n",
       "268   0.045189  0.469228    0.027746  \n",
       "256   0.105957  0.460694    0.030559  \n",
       "112   0.258755  0.461657    0.030875  "
      ]
     },
     "execution_count": 108,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results.sort_values('complexity', ascending=True).head(10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Interestingly, all of the \"complex\" songs are by The Beatles, while most of the least \"complex\" songs are by Radiohead. How true is that for all songs?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 109,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<matplotlib.axes._subplots.AxesSubplot at 0x7f622ab505f8>"
      ]
     },
     "execution_count": 109,
     "metadata": {},
     "output_type": "execute_result"
    },
    {
     "data": {
      "image/png": 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3KX/uf0qm6dcqXgYDOdMm9eS2fwt8AhjEKZ2pmfqesVBypt8A/pO7Pwng7gcD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\nhfx/+y1eYdT8898AAAAASUVORK5CYII=\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622af03908>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "results[results['artist_name'] == 'The Beatles']['complexity'].hist(alpha=0.5, color='blue')\n",
    "results[results['artist_name'] == 'Radiohead']['complexity'].hist(alpha=0.5, color='red')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 110,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [],
   "source": [
    "# Push the results back into the database\n",
    "for row in results.itertuples():\n",
    "    tracks.update_one({'_id': row[1]}, {'$set': {'complexity': row.complexity}})"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Average gloom per album<a name=\"gloomperalbum\"></a>\n",
    "How close can we easily get to the final plot at the end of the fitteR happieR post?\n",
    "\n",
    "First, we find average gloom per album.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 111,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "defaultdict(int,\n",
       "            {'03Qh833fEdVT30Pfs93ea6': 0.24623580565335343,\n",
       "             '0PYyrqs9NXtxPhf0CZkq2L': 0.23500175198141857,\n",
       "             '19K3IHYeVkUTjcBHGfbCOi': 0.22062175593822878,\n",
       "             '19RUXBFyM4PpmrLRdtqWbp': 0.3431302979758603,\n",
       "             '1DBkJIEoeHrTX4WCBQGcCi': 0.28205809775367074,\n",
       "             '1PULmKbHeOqlkIwcDMNwD4': 0.2284613266716491,\n",
       "             '1oW3v5Har9mvXnGk0x4fHm': 0.31375539654482865,\n",
       "             '2Pqkn9Dq2DFtdfkKAeqgMd': 0.2884934384506727,\n",
       "             '2pCqZLeavM2BMovJXsJEIV': 0.2186076399504195,\n",
       "             '36lJLPoPPOKNFddTAcirnc': 0.3821905201779125,\n",
       "             '3OdI6e43crvyAHhaqpxSyz': 0.2121785350158011,\n",
       "             '3nkEsxmIX0zRNXGAexaHAn': 0.15291310732486194,\n",
       "             '47bcKzmKgmMPHXNVOWpLiu': 0.17887638062333686,\n",
       "             '500FEaUzn8lN9zWFyZG5C2': 0.3411762104912795,\n",
       "             '5XfJmldgWzrc1AIdbBaVZn': 0.2506029443837317,\n",
       "             '5ju5Ouzan3QwXqQt1Tihbh': 0.22464122677656365,\n",
       "             '6400dnyeDyD2mIFHfkwHXN': 0.34531516064731943,\n",
       "             '6Eo5EkmdLvZrONzi046iC2': 0.25747581401566805,\n",
       "             '6P9yO0ukhOx3dvmhGKeYoC': 0.2684584850649835,\n",
       "             '6V9YnBmFjWmXCBaUVRCVXP': 0.37361679839282097,\n",
       "             '6vuykQgDLUCiZ7YggIpLM9': 0.3823911679811044,\n",
       "             '71Mwd9tntFQYUk4k2DwA0D': 0.21540669157651762,\n",
       "             '7BgGBZndAvDlKOcwe5rscZ': 0.1751092911259364,\n",
       "             '7dxKtc08dYeRVHt3p9CZJn': 0.35290227411012665,\n",
       "             '7eyQXxuf2nGj9d2367Gi5f': 0.3242377357445757,\n",
       "             '7gDXyW16byCQOgK965BRzn': 0.1772079427962885})"
      ]
     },
     "execution_count": 111,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pipeline = [\n",
    "    {'$match': {'gloom': {'$exists': True}}},\n",
    "    {'$group': {'_id': '$album.id', 'avg_gloom': {'$avg': '$gloom'}}}]\n",
    "album_glooms = collections.defaultdict(int, {a['_id']: a['avg_gloom'] for a in tracks.aggregate(pipeline)})\n",
    "album_glooms"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 112,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>name</th>\n",
       "      <th>release_date</th>\n",
       "      <th>gloom</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>15</th>\n",
       "      <td>7gDXyW16byCQOgK965BRzn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Please Please Me (Remastered)</td>\n",
       "      <td>1963-03-22</td>\n",
       "      <td>0.177208</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>14</th>\n",
       "      <td>3nkEsxmIX0zRNXGAexaHAn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>With The Beatles (Remastered)</td>\n",
       "      <td>1963-11-22</td>\n",
       "      <td>0.152913</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12</th>\n",
       "      <td>71Mwd9tntFQYUk4k2DwA0D</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>A Hard Day's Night (Remastered)</td>\n",
       "      <td>1964-07-10</td>\n",
       "      <td>0.215407</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11</th>\n",
       "      <td>7BgGBZndAvDlKOcwe5rscZ</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Beatles For Sale (Remastered)</td>\n",
       "      <td>1964-12-04</td>\n",
       "      <td>0.175109</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>10</th>\n",
       "      <td>19K3IHYeVkUTjcBHGfbCOi</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Help! (Remastered)</td>\n",
       "      <td>1965-08-06</td>\n",
       "      <td>0.220622</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>3OdI6e43crvyAHhaqpxSyz</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Rubber Soul (Remastered)</td>\n",
       "      <td>1965-12-03</td>\n",
       "      <td>0.212179</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>8</th>\n",
       "      <td>0PYyrqs9NXtxPhf0CZkq2L</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Revolver (Remastered)</td>\n",
       "      <td>1966-08-05</td>\n",
       "      <td>0.235002</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>1PULmKbHeOqlkIwcDMNwD4</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Sgt. Pepper's Lonely Hearts Club Band (Remaste...</td>\n",
       "      <td>1967-06-01</td>\n",
       "      <td>0.228461</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6</th>\n",
       "      <td>6P9yO0ukhOx3dvmhGKeYoC</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Magical Mystery Tour (Remastered)</td>\n",
       "      <td>1967-11-27</td>\n",
       "      <td>0.268458</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>03Qh833fEdVT30Pfs93ea6</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles (Remastered)</td>\n",
       "      <td>1968-11-22</td>\n",
       "      <td>0.246236</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>47bcKzmKgmMPHXNVOWpLiu</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Yellow Submarine (Remastered)</td>\n",
       "      <td>1969-01-17</td>\n",
       "      <td>0.178876</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>2Pqkn9Dq2DFtdfkKAeqgMd</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Abbey Road (Remastered)</td>\n",
       "      <td>1969-09-26</td>\n",
       "      <td>0.288493</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>2pCqZLeavM2BMovJXsJEIV</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Let It Be (Remastered)</td>\n",
       "      <td>1970-05-08</td>\n",
       "      <td>0.218608</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>27</th>\n",
       "      <td>6400dnyeDyD2mIFHfkwHXN</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Pablo Honey</td>\n",
       "      <td>1993-02-22</td>\n",
       "      <td>0.345315</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>26</th>\n",
       "      <td>500FEaUzn8lN9zWFyZG5C2</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>The Bends</td>\n",
       "      <td>1995-03-28</td>\n",
       "      <td>0.341176</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>25</th>\n",
       "      <td>7dxKtc08dYeRVHt3p9CZJn</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>OK Computer</td>\n",
       "      <td>1997-05-28</td>\n",
       "      <td>0.352902</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>24</th>\n",
       "      <td>19RUXBFyM4PpmrLRdtqWbp</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Kid A</td>\n",
       "      <td>2000-10-01</td>\n",
       "      <td>0.343130</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>5ju5Ouzan3QwXqQt1Tihbh</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>1 (Remastered)</td>\n",
       "      <td>2000-11-13</td>\n",
       "      <td>0.224641</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>22</th>\n",
       "      <td>6svTt5o2lUgIrgYDKVmdnD</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>I Might Be Wrong</td>\n",
       "      <td>2001-01-01</td>\n",
       "      <td>0.000000</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>23</th>\n",
       "      <td>6V9YnBmFjWmXCBaUVRCVXP</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Amnesiac</td>\n",
       "      <td>2001-03-12</td>\n",
       "      <td>0.373617</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>21</th>\n",
       "      <td>1oW3v5Har9mvXnGk0x4fHm</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Hail To the Thief</td>\n",
       "      <td>2003-01-01</td>\n",
       "      <td>0.313755</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>20</th>\n",
       "      <td>6Eo5EkmdLvZrONzi046iC2</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Com Lag: 2+2=5</td>\n",
       "      <td>2004-03-24</td>\n",
       "      <td>0.257476</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>19</th>\n",
       "      <td>36lJLPoPPOKNFddTAcirnc</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>In Rainbows Disk 2</td>\n",
       "      <td>2007-01-01</td>\n",
       "      <td>0.382191</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>18</th>\n",
       "      <td>7eyQXxuf2nGj9d2367Gi5f</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>In Rainbows</td>\n",
       "      <td>2007-12-28</td>\n",
       "      <td>0.324238</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13</th>\n",
       "      <td>1DBkJIEoeHrTX4WCBQGcCi</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>The King Of Limbs</td>\n",
       "      <td>2011-02-18</td>\n",
       "      <td>0.282058</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>17</th>\n",
       "      <td>47xaqCsJcYFWqD1gwujl1T</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>TKOL RMX 1234567</td>\n",
       "      <td>2011-10-10</td>\n",
       "      <td>0.000000</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>16</th>\n",
       "      <td>6vuykQgDLUCiZ7YggIpLM9</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>A Moon Shaped Pool</td>\n",
       "      <td>2016-05-08</td>\n",
       "      <td>0.382391</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>5XfJmldgWzrc1AIdbBaVZn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Live At The Hollywood Bowl</td>\n",
       "      <td>2016-09-09</td>\n",
       "      <td>0.250603</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                       _id  artist_name  \\\n",
       "15  7gDXyW16byCQOgK965BRzn  The Beatles   \n",
       "14  3nkEsxmIX0zRNXGAexaHAn  The Beatles   \n",
       "12  71Mwd9tntFQYUk4k2DwA0D  The Beatles   \n",
       "11  7BgGBZndAvDlKOcwe5rscZ  The Beatles   \n",
       "10  19K3IHYeVkUTjcBHGfbCOi  The Beatles   \n",
       "9   3OdI6e43crvyAHhaqpxSyz  The Beatles   \n",
       "8   0PYyrqs9NXtxPhf0CZkq2L  The Beatles   \n",
       "7   1PULmKbHeOqlkIwcDMNwD4  The Beatles   \n",
       "6   6P9yO0ukhOx3dvmhGKeYoC  The Beatles   \n",
       "5   03Qh833fEdVT30Pfs93ea6  The Beatles   \n",
       "4   47bcKzmKgmMPHXNVOWpLiu  The Beatles   \n",
       "3   2Pqkn9Dq2DFtdfkKAeqgMd  The Beatles   \n",
       "2   2pCqZLeavM2BMovJXsJEIV  The Beatles   \n",
       "27  6400dnyeDyD2mIFHfkwHXN    Radiohead   \n",
       "26  500FEaUzn8lN9zWFyZG5C2    Radiohead   \n",
       "25  7dxKtc08dYeRVHt3p9CZJn    Radiohead   \n",
       "24  19RUXBFyM4PpmrLRdtqWbp    Radiohead   \n",
       "1   5ju5Ouzan3QwXqQt1Tihbh  The Beatles   \n",
       "22  6svTt5o2lUgIrgYDKVmdnD    Radiohead   \n",
       "23  6V9YnBmFjWmXCBaUVRCVXP    Radiohead   \n",
       "21  1oW3v5Har9mvXnGk0x4fHm    Radiohead   \n",
       "20  6Eo5EkmdLvZrONzi046iC2    Radiohead   \n",
       "19  36lJLPoPPOKNFddTAcirnc    Radiohead   \n",
       "18  7eyQXxuf2nGj9d2367Gi5f    Radiohead   \n",
       "13  1DBkJIEoeHrTX4WCBQGcCi    Radiohead   \n",
       "17  47xaqCsJcYFWqD1gwujl1T    Radiohead   \n",
       "16  6vuykQgDLUCiZ7YggIpLM9    Radiohead   \n",
       "0   5XfJmldgWzrc1AIdbBaVZn  The Beatles   \n",
       "\n",
       "                                                 name release_date     gloom  \n",
       "15                      Please Please Me (Remastered)   1963-03-22  0.177208  \n",
       "14                      With The Beatles (Remastered)   1963-11-22  0.152913  \n",
       "12                    A Hard Day's Night (Remastered)   1964-07-10  0.215407  \n",
       "11                      Beatles For Sale (Remastered)   1964-12-04  0.175109  \n",
       "10                                 Help! (Remastered)   1965-08-06  0.220622  \n",
       "9                            Rubber Soul (Remastered)   1965-12-03  0.212179  \n",
       "8                               Revolver (Remastered)   1966-08-05  0.235002  \n",
       "7   Sgt. Pepper's Lonely Hearts Club Band (Remaste...   1967-06-01  0.228461  \n",
       "6                   Magical Mystery Tour (Remastered)   1967-11-27  0.268458  \n",
       "5                            The Beatles (Remastered)   1968-11-22  0.246236  \n",
       "4                       Yellow Submarine (Remastered)   1969-01-17  0.178876  \n",
       "3                             Abbey Road (Remastered)   1969-09-26  0.288493  \n",
       "2                              Let It Be (Remastered)   1970-05-08  0.218608  \n",
       "27                                        Pablo Honey   1993-02-22  0.345315  \n",
       "26                                          The Bends   1995-03-28  0.341176  \n",
       "25                                        OK Computer   1997-05-28  0.352902  \n",
       "24                                              Kid A   2000-10-01  0.343130  \n",
       "1                                      1 (Remastered)   2000-11-13  0.224641  \n",
       "22                                   I Might Be Wrong   2001-01-01  0.000000  \n",
       "23                                           Amnesiac   2001-03-12  0.373617  \n",
       "21                                  Hail To the Thief   2003-01-01  0.313755  \n",
       "20                                     Com Lag: 2+2=5   2004-03-24  0.257476  \n",
       "19                                 In Rainbows Disk 2   2007-01-01  0.382191  \n",
       "18                                        In Rainbows   2007-12-28  0.324238  \n",
       "13                                  The King Of Limbs   2011-02-18  0.282058  \n",
       "17                                   TKOL RMX 1234567   2011-10-10  0.000000  \n",
       "16                                 A Moon Shaped Pool   2016-05-08  0.382391  \n",
       "0                          Live At The Hollywood Bowl   2016-09-09  0.250603  "
      ]
     },
     "execution_count": 112,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "albums_df = pd.DataFrame(list(albums.find({}, ['release_date', 'name', 'artist_name'])))\n",
    "\n",
    "def try_date(d):\n",
    "    try:\n",
    "        return datetime.strptime(d, \"%Y-%m-%d\")\n",
    "    except ValueError:\n",
    "        return datetime.strptime(d, \"%Y\")\n",
    "\n",
    "albums_df['release_date'] = albums_df['release_date'].apply(lambda d: try_date(d))\n",
    "albums_df['gloom'] = albums_df['_id'].apply(lambda i: album_glooms[i])\n",
    "albums_df.sort_values('release_date', inplace=True)\n",
    "albums_df"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 113,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "image/png": 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OLqhWDqT9zaU62tPpHZj8o5TnSDWzxlNnUatyIB2vM2rPkWpmWVFHaZmDp9ArNV7T6XmO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\ng/4/Jzf7buWu9R8AAAAASUVORK5CYII=\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622aa361d0>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig, ax = plt.subplots()\n",
    "ax.plot_date(albums_df['release_date'], albums_df['gloom'])\n",
    "\n",
    "fig.autofmt_xdate()\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "One thing that's noticable is the split in time between the groups, and the much shorter period the Beatles were active for."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 114,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>name</th>\n",
       "      <th>release_date</th>\n",
       "      <th>gloom</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>15</th>\n",
       "      <td>7gDXyW16byCQOgK965BRzn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Please Please Me (Remastered)</td>\n",
       "      <td>1963-03-22</td>\n",
       "      <td>0.177208</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>14</th>\n",
       "      <td>3nkEsxmIX0zRNXGAexaHAn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>With The Beatles (Remastered)</td>\n",
       "      <td>1963-11-22</td>\n",
       "      <td>0.152913</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12</th>\n",
       "      <td>71Mwd9tntFQYUk4k2DwA0D</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>A Hard Day's Night (Remastered)</td>\n",
       "      <td>1964-07-10</td>\n",
       "      <td>0.215407</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11</th>\n",
       "      <td>7BgGBZndAvDlKOcwe5rscZ</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Beatles For Sale (Remastered)</td>\n",
       "      <td>1964-12-04</td>\n",
       "      <td>0.175109</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>10</th>\n",
       "      <td>19K3IHYeVkUTjcBHGfbCOi</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Help! (Remastered)</td>\n",
       "      <td>1965-08-06</td>\n",
       "      <td>0.220622</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>3OdI6e43crvyAHhaqpxSyz</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Rubber Soul (Remastered)</td>\n",
       "      <td>1965-12-03</td>\n",
       "      <td>0.212179</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>8</th>\n",
       "      <td>0PYyrqs9NXtxPhf0CZkq2L</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Revolver (Remastered)</td>\n",
       "      <td>1966-08-05</td>\n",
       "      <td>0.235002</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>1PULmKbHeOqlkIwcDMNwD4</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Sgt. Pepper's Lonely Hearts Club Band (Remaste...</td>\n",
       "      <td>1967-06-01</td>\n",
       "      <td>0.228461</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6</th>\n",
       "      <td>6P9yO0ukhOx3dvmhGKeYoC</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Magical Mystery Tour (Remastered)</td>\n",
       "      <td>1967-11-27</td>\n",
       "      <td>0.268458</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>03Qh833fEdVT30Pfs93ea6</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>The Beatles (Remastered)</td>\n",
       "      <td>1968-11-22</td>\n",
       "      <td>0.246236</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>47bcKzmKgmMPHXNVOWpLiu</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Yellow Submarine (Remastered)</td>\n",
       "      <td>1969-01-17</td>\n",
       "      <td>0.178876</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>2Pqkn9Dq2DFtdfkKAeqgMd</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Abbey Road (Remastered)</td>\n",
       "      <td>1969-09-26</td>\n",
       "      <td>0.288493</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>2pCqZLeavM2BMovJXsJEIV</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Let It Be (Remastered)</td>\n",
       "      <td>1970-05-08</td>\n",
       "      <td>0.218608</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                       _id  artist_name  \\\n",
       "15  7gDXyW16byCQOgK965BRzn  The Beatles   \n",
       "14  3nkEsxmIX0zRNXGAexaHAn  The Beatles   \n",
       "12  71Mwd9tntFQYUk4k2DwA0D  The Beatles   \n",
       "11  7BgGBZndAvDlKOcwe5rscZ  The Beatles   \n",
       "10  19K3IHYeVkUTjcBHGfbCOi  The Beatles   \n",
       "9   3OdI6e43crvyAHhaqpxSyz  The Beatles   \n",
       "8   0PYyrqs9NXtxPhf0CZkq2L  The Beatles   \n",
       "7   1PULmKbHeOqlkIwcDMNwD4  The Beatles   \n",
       "6   6P9yO0ukhOx3dvmhGKeYoC  The Beatles   \n",
       "5   03Qh833fEdVT30Pfs93ea6  The Beatles   \n",
       "4   47bcKzmKgmMPHXNVOWpLiu  The Beatles   \n",
       "3   2Pqkn9Dq2DFtdfkKAeqgMd  The Beatles   \n",
       "2   2pCqZLeavM2BMovJXsJEIV  The Beatles   \n",
       "\n",
       "                                                 name release_date     gloom  \n",
       "15                      Please Please Me (Remastered)   1963-03-22  0.177208  \n",
       "14                      With The Beatles (Remastered)   1963-11-22  0.152913  \n",
       "12                    A Hard Day's Night (Remastered)   1964-07-10  0.215407  \n",
       "11                      Beatles For Sale (Remastered)   1964-12-04  0.175109  \n",
       "10                                 Help! (Remastered)   1965-08-06  0.220622  \n",
       "9                            Rubber Soul (Remastered)   1965-12-03  0.212179  \n",
       "8                               Revolver (Remastered)   1966-08-05  0.235002  \n",
       "7   Sgt. Pepper's Lonely Hearts Club Band (Remaste...   1967-06-01  0.228461  \n",
       "6                   Magical Mystery Tour (Remastered)   1967-11-27  0.268458  \n",
       "5                            The Beatles (Remastered)   1968-11-22  0.246236  \n",
       "4                       Yellow Submarine (Remastered)   1969-01-17  0.178876  \n",
       "3                             Abbey Road (Remastered)   1969-09-26  0.288493  \n",
       "2                              Let It Be (Remastered)   1970-05-08  0.218608  "
      ]
     },
     "execution_count": 114,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "beatles_df = albums_df[albums_df['release_date'] < datetime(1971, 1, 1)]\n",
    "beatles_df"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 115,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "image/png": 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k4A7n/Z+AY90TUVEURUlHNkp8KPB20uf1zrqU24jIDuADY8werkio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\noB8AAAAASUVORK5CYII=\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622ae50128>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig, ax = plt.subplots()\n",
    "ax.plot_date(beatles_df['release_date'].values, beatles_df['gloom'].values, linestyle='-')\n",
    "\n",
    "fig.autofmt_xdate()\n",
    "\n",
    "for a in beatles_df.itertuples():\n",
    "    for t in tracks.find({'album.id': a[1], 'gloom': {'$exists': True}}):\n",
    "        ax.scatter(a.release_date, t['gloom'])\n",
    "\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 116,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>name</th>\n",
       "      <th>release_date</th>\n",
       "      <th>gloom</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>27</th>\n",
       "      <td>6400dnyeDyD2mIFHfkwHXN</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Pablo Honey</td>\n",
       "      <td>1993-02-22</td>\n",
       "      <td>0.345315</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>26</th>\n",
       "      <td>500FEaUzn8lN9zWFyZG5C2</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>The Bends</td>\n",
       "      <td>1995-03-28</td>\n",
       "      <td>0.341176</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>25</th>\n",
       "      <td>7dxKtc08dYeRVHt3p9CZJn</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>OK Computer</td>\n",
       "      <td>1997-05-28</td>\n",
       "      <td>0.352902</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>24</th>\n",
       "      <td>19RUXBFyM4PpmrLRdtqWbp</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Kid A</td>\n",
       "      <td>2000-10-01</td>\n",
       "      <td>0.343130</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>23</th>\n",
       "      <td>6V9YnBmFjWmXCBaUVRCVXP</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Amnesiac</td>\n",
       "      <td>2001-03-12</td>\n",
       "      <td>0.373617</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>21</th>\n",
       "      <td>1oW3v5Har9mvXnGk0x4fHm</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Hail To the Thief</td>\n",
       "      <td>2003-01-01</td>\n",
       "      <td>0.313755</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>20</th>\n",
       "      <td>6Eo5EkmdLvZrONzi046iC2</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>Com Lag: 2+2=5</td>\n",
       "      <td>2004-03-24</td>\n",
       "      <td>0.257476</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>19</th>\n",
       "      <td>36lJLPoPPOKNFddTAcirnc</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>In Rainbows Disk 2</td>\n",
       "      <td>2007-01-01</td>\n",
       "      <td>0.382191</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>18</th>\n",
       "      <td>7eyQXxuf2nGj9d2367Gi5f</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>In Rainbows</td>\n",
       "      <td>2007-12-28</td>\n",
       "      <td>0.324238</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13</th>\n",
       "      <td>1DBkJIEoeHrTX4WCBQGcCi</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>The King Of Limbs</td>\n",
       "      <td>2011-02-18</td>\n",
       "      <td>0.282058</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>16</th>\n",
       "      <td>6vuykQgDLUCiZ7YggIpLM9</td>\n",
       "      <td>Radiohead</td>\n",
       "      <td>A Moon Shaped Pool</td>\n",
       "      <td>2016-05-08</td>\n",
       "      <td>0.382391</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                       _id artist_name                name release_date  \\\n",
       "27  6400dnyeDyD2mIFHfkwHXN   Radiohead         Pablo Honey   1993-02-22   \n",
       "26  500FEaUzn8lN9zWFyZG5C2   Radiohead           The Bends   1995-03-28   \n",
       "25  7dxKtc08dYeRVHt3p9CZJn   Radiohead         OK Computer   1997-05-28   \n",
       "24  19RUXBFyM4PpmrLRdtqWbp   Radiohead               Kid A   2000-10-01   \n",
       "23  6V9YnBmFjWmXCBaUVRCVXP   Radiohead            Amnesiac   2001-03-12   \n",
       "21  1oW3v5Har9mvXnGk0x4fHm   Radiohead   Hail To the Thief   2003-01-01   \n",
       "20  6Eo5EkmdLvZrONzi046iC2   Radiohead      Com Lag: 2+2=5   2004-03-24   \n",
       "19  36lJLPoPPOKNFddTAcirnc   Radiohead  In Rainbows Disk 2   2007-01-01   \n",
       "18  7eyQXxuf2nGj9d2367Gi5f   Radiohead         In Rainbows   2007-12-28   \n",
       "13  1DBkJIEoeHrTX4WCBQGcCi   Radiohead   The King Of Limbs   2011-02-18   \n",
       "16  6vuykQgDLUCiZ7YggIpLM9   Radiohead  A Moon Shaped Pool   2016-05-08   \n",
       "\n",
       "       gloom  \n",
       "27  0.345315  \n",
       "26  0.341176  \n",
       "25  0.352902  \n",
       "24  0.343130  \n",
       "23  0.373617  \n",
       "21  0.313755  \n",
       "20  0.257476  \n",
       "19  0.382191  \n",
       "18  0.324238  \n",
       "13  0.282058  \n",
       "16  0.382391  "
      ]
     },
     "execution_count": 116,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "radiohead_df = albums_df[(albums_df['artist_name'] == 'Radiohead') & (albums_df['gloom'] > 0)]\n",
    "radiohead_df"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 117,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "image/png": 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UKbJ5c3Bz9KnC5Zc7V0DbCa/DxKc+5QZWvfmmyyt/5JHwgx+4KeTykcWLnbvp\n2GPh6ae7hn+9s+S9ch87dixu/u74EarrvO3+EKQCy6cRqkHLOnBgN9y0ivFsY8CA4B7rhx928wME\nFfqYKf37ww03uKked+6EkSPd6N8tW3ItWWrs3u36Ec45B/7wB5g9u+v41ztNMpNeW7tNJgErgTeB\nqxLs/x5Oqy4D/g6MjNt3DbAKWAGcnOT8GTVNKisv8Vwzh/rucw8yfWk+jVDNRd6dRGmGi4qCG535\nySeqhxwSbOhjtlmzRvWb33QDw268UXXbtlxLlJxNm1THjVM98UTV9etzLU04IBOfO866fwsoBgqA\nV+KVt3dM77jlU4HHveXPeAp/H6DEO48kuEbGlVy+fLnOnTvXV1970Mo2n0aoVldXayx2iEJ/hdEK\n/bVnzxLfZY1PMzxp0kzdf/9a/egjXy+5hxtvVJ08OZhr+c2KFapf+5rqwQer3nGH6vbtuZaoNU8/\nrTpggOr06fmTPC4IMlXuxzYra2/96kTWe9z+qcBfEx0LPA4ck6BMEP+HjAla2eaT5R6Wju3zzlO9\n9lr/r9Oc9fHNN/2/VpAsWeImsCgpUf3DH3KvSHftUp050310nrRpE/aiPeWeinNyIM6p3cw6b1sr\nROQiEXkLuBG4JEnZ9YnK5gtBpwMIS0a9VNi6dSux2HDiO7ZjsWFs3bo1UDl++lP4zW/cpN1+Mn06\nXHABHHqov9cJmtGj4bHH4I9/hN//3sXGP/AANOUgm8GmTXDyyS59wJIlMH588DLkNcm0vrZY1WcC\nv4tbPxf4VTvHnw3M9ZbvAM6J23cPcHqCMkF85LJCLtIBhGV4fXuEqZXxox+pnnuuf+dftsyFPn7w\ngX/XCANNTS52fPRo93vsseDms212w1x3nT9TFEYF2rHcU+lnXgcMiVsfhEugnoyFwG/jysZnTk5a\ndubMmXuWy8rKKCsrS0G04Jk69SzGjz8p0HQAgcyUniHNrYyKinIKCorZubMuZ62M//xPOOwwePll\nl2gsm6jCZZe50Md+/bJ77rAhAhMnOuv5oYfgiivg+uvd7/jj/bnm7t0uAuZ3v4P//m+z1ttSVVVF\nVVVVagcn0/raYlV3p6VDtRDXoTqqzTHD45ZPBaq1dYdqITAUHztUgyQfLOlcEZb/zd13u8Et2bY0\nH3xQ9Ygjcu+LzgW7dqnOm+f88ZMmqb78cnbPv3Gjanm5+23YkN1zRxUyHaGKC4V8AxfSeLW3bRZw\nird8K/AibX9RAAAYGklEQVQvYCnwdLzyx4VCvoWPoZBBEtaZ3I3W7NrllPBDD2XvnM2hj089lb1z\n5iPbt6v++tfObXLmmarZ6DN/8knXaTpjhrlhOkN7yj0yicOCoKGhgeLikTQ2LsZ1HL5KLFZOXd3K\n0LtNuiJPPAHf/z68/joUZmHQ6s9+Bi+8AH/5S+bnigIffwy//jXcfDN85SswYwYMHdq5czQPSrr7\nbteJO26cP7JGlfYSh+X9CNUgqa2tpbCwhPiIkIKCYmpra3MnlJF0xPDJJ7tolt/8JvNrvPuuU+63\n3JL5uaLCvvvCD38Iq1ZBcTGMGQOVlbAxwRTGie7Rxo3Op/7887B0qSn2bGPKvRPYzEjho6OUBzff\n7MIjN2/O7DpRDX3MBn37ug7mFSugZ0+X+viqq+D9993+RPfoySfhqKOgvNy1sA46KLd1iCLmlukk\nCxYspKLiolYRIVGZ1i/fSNVNduGFzsr8xS/Su84rr8CkSbByZfQjZLLBunUuf/wDD8C3v72NX/7y\nMHbsOBPoC2yhW7deHHDAj5k/vzvl5bmWNr+JfD73oAlLREhXp2XEcL2Xz6Y+4YjhTZvcaNJ0cpk3\nNblcJr/5TXZk7kqsWqV6wgnLFC5rlf8Hvq9/+MOjuRYvEhDllL+5oKioiDFjxlgnao4pKSnh449X\nAYcBFwKH0di4ai832YEHuhjtq6/u/DUeecS5F7797SwI3MUYPhyKihYCP6ElNXMv4CYeffT53AnW\nRTDlbuQ1It2AKmAJUIVI94THXXYZ1NTAc8+lfu7t2+HKK+HWWy2tbLqEIed+V8WUu5FVgsx1X1tb\nSyw2jPjopZ49D0kYvRSLuZGVV1yRep6U225znYMWxZE+Yci531Wx/7CRNYKerKOz0UtTp7q/993X\n8bnffRduuslCHzNl9uwLGDZsBi0KfhvDhs1g9uwLciZTV8GiZYyskKsBXp2NXnr+eZg2zUW+xGLJ\nz/vd77qp6X7+cx+E7mKsWVPH9Olz2bChiQEDujF79gUMHVqca7EiQXvRMqbcjaxQU1PDhAkXsmXL\nkj3b+vQZzVNP3cWYMWN8vXZDQ0OnErlNmeISil1zTeL9Fvpo5As2QtXwnXwa4HXTTc4ir6/fe596\nE17PnGmK3chvTLkbWSFXE4uk4+cfPhzOO8/lQmnLI4/Ae+9Z6KOR/5hbxsgqyVwknXWdpHqtdP38\nmzfDyJGweDEcfrjbtn07fOYz8NvfwoQJWRHRMHzF3DJGYCQa4OVXFE0midz694drr3WJr5q57Tan\n6E2xG1HALHfDV/yMosn03Dt2wIgRdQwbNpdPPmni5Ze78dhjFzBunEVyGPmBWe5GzvAzTXKmfv71\n6+v45JPbeeaZK3nxxVns2HEl3/ve7axZU5exbIaRa1Ky3EVkEm62pW7AHFW9qc3+y4FvAzuBBuBb\nqrrW27cb+CcgQJ2qnpbg/Ga5R4S2vvUg4t/T9eefe+4s/vSnK2k9PH4b06bdwr33JuhtNYyQkZHl\nLi55xx3AROBwYKqIjGxz2FLgKFU9EngQuDlu3zZVHa2qpYkUuxEdEvnWcxVFkwrr1zeRKO/Jhg0p\n5icwjBCTiltmLLBKVetUdSdwHzA5/gBVfVZVP/FWXwIGxu1OnGvYiBQNDQ1UVFxEY+NitmxZQmPj\nYioqLqKhoYGpU8+irm4lTz11F3V1K7Oa/z6TzlrLe2JEmVSe4oHA2rj1dbRW3m2pAB6PW+8hItUi\n8qKITE5WyMhvOvKt+5Emub0PSipY3hMjyqSSyDSR5Z3QQS4i5wJHASfGbR6iqptEZCjwjIi8qqpr\nOi9q+/gRR22kTusRqs637vcI1eYPSmPj3h+UVJ6BoUOLefLJi5k+/Za4vCcXW94TIxKkotzXAUPi\n1gcBG9oeJCLjgWuAEzz3DQCqusn7u0ZEqoBSYC/lPnPmzD3LZWVllJWVpSI/0JI8qrDQKRib+i54\nmn3rFRXlrZJ4+fmhzcYHZejQYus8NfKGqqoqqqqqUjq2w2gZcbMfvAGMAzYC1cBUVV0Rd0wpcD8w\nUVXfjtveD/hYVXeIyP7AC8BkVV3Z5hppR8vkKhuhkZigW1A2p63RlWkvWqZDy11Vd4tIJfAELaGQ\nK0RkFlCjqo8CP8OFHdwvIvEhj6OAu7xwyG7ADW0Ve6Zk2jQ3sktRUVGg//epU89i/PiTzCVnGG3I\n+xGqZrkbhtFVifQI1TDHURuGYeSKvLfcmwnS12uROYaf2PNlpEqkLfdm/IijTkTQ84QaXQt7voxs\nERnLPQjMv98xZnWmjz1fRmfpEpZ7EPiZ4TAKmNWZGfZ8GdnElHsnyKd5QoMm01QAhj1fRnYx5d4J\nLDInOWZ1Zk6Un6+GhgZqamrsYx8g5nNPA/Mr7435i7NH1J4vSw/iH+353E25G1nDUgEYbbGPvr9k\nlH7AMFKlvVQAUbNGjdSw9CC5w3zuRlZJNN7Aomi6LtZJnDvMLWP4ijXLDXPX+Ye5ZYycYc1ywzJ3\n5gZT7mlg/uPUycUMTV2RsD+TQaeCNszn3mnMf9w5ohy7HRaan8ny8u/YM2nswXzuncD8x+njp2UZ\ndqvVTxoaGhg06FB27Pg7zc9kYeEJrFu3KlT/i658j/wk49wyIjJJRFaKyJsiclWC/ZeLyOsi8oqI\nPCkig+P2ne+Ve0NEzku/GrnHRmGmj19ZO7t6S2rZsmXs2FFE/DO5Y8f+LFu2LJditaKr36Ocoart\n/nAfgLeAYqAAeAUY2eaYE4Ge3vKFwH3e8n7A20BfoF/zcoJraD5QX1+vsVh/hX8qqMI/NRbrr/X1\n9bkWrUti90N10aJFCvu2+h/Avrpo0aJci6aqdo/8xtOdCXV3Kpb7WGCVqtap6k7gPmBymw/Es6r6\nibf6EjDQW54IPKGqW1T1Q9w8rJM6+f0JDeY/DhfZaknlc96T0tJSCgq6AWXAaKCMgoJulJaW5lYw\nD3cvBhJ/j2BAl2/tBvHMpaLcBwJr49bX0aK8E1EBPJ6k7PoOyoaeqVPPoq5uJU89dRd1dSsDidfN\nZ+XjJ9kYIJPvLoOioiLmzbuHnj2VXr220bOnMm/ePaExOHr37k1j41vE36PGxrfp3bt3LsXKKYE9\nc8lMem1xmZwJ/C5u/VzgV0mOPRd4ESjw1q8E/itu/4+AyxOU87nxkr/Mn3+fxmL9tW/f0RqL9df5\n8+/LtUihovn/06dPaaf/P1FyGdTX12t1dXXoZK+urtZYbKhCf4VShf7as2eJVldX51q0nJDtZ452\n3DKpxLmvA4bErQ8CNrQ9SETGA9cAJ6hz3zSXLWtTdnGii8ycOXPPcllZGWVlZYkO61LE50h3g4Be\npaKinPHjTwqNZZZrMhkgE6UBVmGNI3etqC3Ag0AvYBsiU7rsOIdMn7mqqiqqqqpSu1gyra8tVnV3\nWjpUC3EdqqPaHFPqHTOszfb4DtXm5X4JrpHWVyvqVFdXa9++o70vvPv16VPaZa2ebBMlyz3MZNK6\nihpBWu4dKndXnknAG8Aq4Gpv2yzgFG/5SWAjsBRYBjwSV/YCr9ybwHlJzp/efyri1NfXa2Fh31YP\nQmFhX1M+WcQUTzCE1W2UC7L5zLWn3G0QU4hpaGhg4MBD2LmzACgBaiko2Mn69atD2QTPV2yAjRE0\n2XrmLHFYnlJbW8u++45gy5a/AbVACbHYxLz0CYeZsPqrjegSxDNnuWVCTEuo30ZgDLDRkm4ZhpES\nptxDjA2aCoYojCOIQh2M7GI+9zzAfML+EYXJm6NQByM9bIJsw0hAFLJ8RqEORvpknBXSMKJIFLJ8\nRqEOhj+YcjfynnT9zVGYvDkKdTD8wZS7kdcsWLCQIUNGUF7+DYYMGdGpJExR6LCOQh0MfzCfu5G3\nuEFew9i5cx9gKLAmrUFeUeiwjkIdjM5jg5iMSLJs2TJ27twNPE/L5NtfYNmyZZx88skpnycKg5ii\nUAcju5hbxshzBtB6IoiDcyiLYYQHU+5G3lJaWkphYQPxnYmFhe+FZhYiw8glptyNvKWoqIi5c+8i\nFiunV6/PE4uVM3fuXeaeMAysQ9WIANaZaHRVbISqYRhGBLERqoZhGF0MU+6GYRgRJCXlLiKTRGSl\niLwpIlcl2H+8iCwRkZ0ickabfbtFZKmILBORR7IluGEYhpGcDgcxiUg34A5gHLABqBGRv6jqyrjD\n6oDzgSsTnGKbqo7OhrCGYRhGaqRiuY8FVqlqnaruBO4DJscfoKrvqOq/gES9ogmd/YZhZA+brMNo\nSyrKfSCwNm59nbctVXqISLWIvCgikzs+3DCMzrBgwUKKi0cyYcKFFBeP7FTyNCO6pJJbJpHl3Zm4\nxSGquklEhgLPiMirqrqm7UEzZ87cs1xWVkZZWVknLmEYXZOGhgYqKi6isXExjY0uv05FRTnjx59k\nMf8RpKqqiqqqqpSOTUW5rwOGxK0PwvneU0JVN3l/14hIFVAKtKvcDcNIjebJOpxih/jJOky5R4+2\nhu+sWbOSHpuKW6YGGC4ixSJSCJwN/E87x++x9EWkn1cGEdkf+CKwPIVrGoaRAjZZh5GMDpW7qu4G\nKoEngNeB+1R1hYjMEpFTAETkaBFZC5wJ/FZEXvOKjwJeFpFlwNPADW2ibAzDyACbrMNIhqUfMIwI\nYPl1uiaWW8YwDCOCWG4ZwzCMLoYpd8MwjAhiyt0wDCOCmHI3DMOIIKbcDcPwHct9Ezym3A3D8BXL\nfZMbLBTSMAzfaGhooLh4JI2NiwGX+yYWK6eubqXF42cBC4U0DCMnNOe+cYod4nPfGP5iyt0wDN+w\n3De5w5S7YRi+Yblvcof53A3D8B3LfeMPllvGMAwjgliHqmEYRhfDlLthGEYEMeVuGIYRQVJS7iIy\nSURWisibInJVgv3Hi8gSEdkpIme02Xe+V+4NETkvW4LHk+qEsflClOoTpbqA1SfsRKk+mdalQ+Uu\nIt2AO4CJwOHAVBEZ2eawOuB84E9tyu4HXAeMAY4BZohI34wkTkCUbihEqz5RqgtYfcJOlOrju3IH\nxgKrVLVOVXcC9wGT4w9Q1XdU9V9A25CXicATqrpFVT/EzcM6KSOJDcMwjA5JRbkPBNbGra/ztqVC\n27LrO1HWMAzDSJMO49xF5EzgZFX9rrd+LjBGVS9NcOwfgP9V1Ye89SuBQlW93lv/EbBNVX/ZppwF\nuRuGYaRBsjj3fVIouw4YErc+CNiQ4nXXAWVtyi5OVTjDMAwjPVJxy9QAw0WkWEQKgbOB/2nn+HhF\nvQiYICJ9vc7VCd42wzAMw0c6VO6quhuoxHWGvg7cp6orRGSWiJwCICJHi8ha4EzgtyLymlf2A2A2\n8DLwD2CW17FqGIZh+EgocssYhmEY2SWvRqiKSGR88yLyKe9vJOrkjYeIBCKyv/c3EvemmajUR0S6\n51qGbCEiXxKRYX6cO/QvpIh8VkQmisg+UUgdKSKjReQBoAIgn+vk1eUcAFVtyrU8mSIipSLyGHA5\n5Pe9ARCRL4jIbSJyAUSiPkeLyB+B6/xSiEHhvTtPAM8AWR/YCSFW7iKyn4jcCdwLfBe4IZ9vqIh8\nWkRuB+7EzTm2j7c976wQccwGngauEJEvedtD+zy1h4h0E5F5wB+A+ap6ba5lyhQvhPkOXEDEeBH5\niYh8NsdipYV3f+4A7sI9cwcDM0Vk39xK1nlEpEBE7gJ+B9yGCzAp8/Zl9f0J88t4JbBdVY8Evo1L\nfZDPzcqbccbTsTir/Ruwp8M6r/AswOXAWcCvcR/fvLXePbn3A5ar6r0AIlKU526Mw4GHVPWPuHfp\nGOBrItIvt2J1Hu/+PAOMU9W5wM9wo+F35VKuNOkBPAscr6qPAg8CozzPRFbfn1ApdxEZGvc1/qmq\nXu4tnwz0Bw5v9lXnA159Yt5qpape4i03AMtF5LAcidZpROTrIvIDEfmit2kh8CTwEtBDRKZ6x+VF\nSySuPsd5m84HThaRH4rIYpxV9TsRyYtpg+Lq8wVv02bcfemrqpuAd3HjVY7NmZCdQESOFZERzeuq\n+pCqfigiE3DRdwcD14vIqJwJmSJt6rJNVeeraqO3vg+wW1V3RdJyF5ESEXkcuAf4o4gcpqofe/vK\ncJbHPOB0nL9tUM6ETYE29bk3vj4eCgwAmusYWgtRRLqLyHVAczbQu0TkDFVt8iz4NcD/AmeJyH5h\nb4kkqM9vROTrXtjur3D+9pm48N9PAdNEJJXBfjkhQX3uFpGJQDVwIHCPiPwZ6A5sBQ7yyoXymROR\nfiLyV5zh8HUR6eVtb5b3A+AcVZ2Ae3/OF5EDcyNt+ySqi6qq59Zs1r3PAqd77040LPc2D9eVwD9U\ndRxuBOvsZv+gqlap6hhV/Q2uOXYAcGjgAndAO/V5Blefw5t3quobwG7aJGALI56yPgy4QlV/AcwA\nKpstJs8CeRGXN+gMgDD3jSSpz/dFZISqzgZGqeqzqvo+sAA4TVVD2/xPUJ+ZwBXAv4FrgAeAv6nq\nVNxYky975cLaudoL54e+2Fs+AVrkVdWXVfUx79jHgFI8IymEJK2LqjZ5Cr7WO+bEbF88l5Z7T4A4\nq+h1AFW9A5eJcqqIHOAdI96+5cD+uH9I2EhWn1/j6nNOc3087gcOEJHuYXvRROQ8ETkxzj/7LrCf\n5xd8COdv/3qz9aGqa3DZQn8sIh/h6hsaUqjPa7j7I6q6Ja7oMOAfYXM1dVCfB4BVwFmqullVF6rq\n773jDgMeyYXM7RFXnz6quh7X2fhn4BPgGBEZkKToUcBGQuR7T7Uu3rPWhKc3vP1ZbVEFrtxFZIKI\nPAnc7DWHd+H8g6Ui8nkR+TzwL6AY52cH2EdEvioiT+Me5PfC0qxMsz7gsmMODosbw2sqHuz5m88H\npgG/FpHewHvAEUBv7/DbcVb6gV7ZUcDduA/acaq6IGj525JGfU6nxWUxTkT+AZwE3B2Ge9TJ+twG\nnCYiB3tlx4nI6zgr9/ngpd+bJPX5jYjsr6qfeG7Mp3Ad3SfFlevjvXM1uPTh18f5r3NCOnXx3DPd\nVXUrLlDk2ObtWRNMVQP7AcNxTcPJuAdtAXARzrc5HXgU9/AdDcwHvu+VG4/zIZ4WpLw+1KcyruxQ\n4Mu5roMnS3fv7wjgXm95H1zY5hygH67peAKwr7d/IXCpt3wwcEqu65GF+lR6y18FTs91PbJ4f4bl\nSX1ux0X4xB97OfATXCx4T2/beGByruuRYV32jdte4IdsvncUxTXdm3DhWEtU9S/evqeAnwP3q+ps\nETlEVVd7+17Ea6oAT6tqKJr6GdTnBeKaXupcGWtyUYdmPBfSj4Hu4gbv9MH1BaCu974S2AT8Avdx\nOhunyBfimsIvecduxH3IckoW6lPjHdteYrzAyOL9eRt4O/AKtCGF+lwCbBCRE1X1Wa/Y3TiF+BQw\nRERKVfWpHIjfigzr8iRQ7NVlg7pJkLKOr24ZEfkmLu3vbG/Tazhfeom3vg/uoWvO777GK/dd4FvA\nMghP50+G9akgRPURkROBJbim4lu4Ou0EykVkLOz5gM0CblbVebjkceeJyDJcXV/LheyJsPpEoj6K\nU5gz44r+B641/ApwhKqmmm7cN7JQl38SRF18bK70xnXeXAosBUZ622/FuS9ewI0+PQL4K3Cgt/8y\nnAU1JtdNrojX53jgG3HrdwL/D7gA1xoB9/E/CBdxMdjbdhBwSK7lt/pEuj5/Bkq8bZOBE3Itfz7W\nxe9/whDv743AQm+5O65j8ThvfTAwF+jhre/rp0xWnz112Rc3Wq7ZZzgNuMFbfgW42Fs+GliQa3mt\nPlafsPzypS6+umVU9R1v8VZgqIhMVBd5sEVVm3vtL8TFqe7yyoQ1ZjVS9VHVj1V1u7ZEgkzAjZwF\n+CZuSPSjuFbJ0lzI2BmsPuEmnfqEJSKuLflSl0BG3qnqJhGZA/wXsEhVd3u+qWuBAuBbGoJws1SJ\nUn3ExXArLqyxuSPx37i6fRZYoy5eNy+w+oSbztRHPfM3rIS9LoFM1iEi3dSNyHoAN+hgO673e5W6\nnvy8Ikr18SyKQlyqhIdxHdnv45qWH+VStnSw+oSbKNUn7HUJynJvEpcQ7ABcessfq+rfgri2H0Sp\nPqqqIlKK8xsOBf6gqnNyLFbaWH3CTZTqE/a6BDbNnohcCQwCrlLV7YFc1EeiVB9xidi+Afwi3+sC\nVp+wE6X6hLkuQSr3bpqn+b4TEbX6GIYRLWyCbMMwjAgSinzuhmEYRnYx5W4YhhFBTLkbhmFEEFPu\nhmEYEcSUu2EYRgQx5W4YhhFBTLkbhmFEkP8PvIWwbHkpja0AAAAASUVORK5CYII=\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622aa361d0>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig, ax = plt.subplots()\n",
    "ax.plot_date(radiohead_df['release_date'].values, radiohead_df['gloom'].values, linestyle='-')\n",
    "\n",
    "for a in radiohead_df.itertuples():\n",
    "    for t in tracks.find({'album.id': a[1], 'gloom': {'$exists': True}}):\n",
    "        ax.scatter(a.release_date, t['gloom'])\n",
    "\n",
    "fig.autofmt_xdate()\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Complexity per album<a name=\"complexityovertime\"></a>\n",
    "Let's generate the same plots for \"complexity\" per album.\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 118,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "defaultdict(int,\n",
       "            {'03Qh833fEdVT30Pfs93ea6': 0.3031378075765009,\n",
       "             '0PYyrqs9NXtxPhf0CZkq2L': 0.3955461017790891,\n",
       "             '19K3IHYeVkUTjcBHGfbCOi': 0.49267873060230916,\n",
       "             '19RUXBFyM4PpmrLRdtqWbp': 0.19682403824100217,\n",
       "             '1DBkJIEoeHrTX4WCBQGcCi': 0.23682091199666255,\n",
       "             '1PULmKbHeOqlkIwcDMNwD4': 0.33137519763673373,\n",
       "             '1oW3v5Har9mvXnGk0x4fHm': 0.29898400325001767,\n",
       "             '2Pqkn9Dq2DFtdfkKAeqgMd': 0.28015413095314634,\n",
       "             '2pCqZLeavM2BMovJXsJEIV': 0.354664325706374,\n",
       "             '36lJLPoPPOKNFddTAcirnc': 0.1704162869852709,\n",
       "             '3OdI6e43crvyAHhaqpxSyz': 0.44772169900647624,\n",
       "             '3nkEsxmIX0zRNXGAexaHAn': 0.5849736696540723,\n",
       "             '47bcKzmKgmMPHXNVOWpLiu': 0.2953681657492741,\n",
       "             '500FEaUzn8lN9zWFyZG5C2': 0.23613033343466053,\n",
       "             '5XfJmldgWzrc1AIdbBaVZn': 0.3884655768099993,\n",
       "             '5ju5Ouzan3QwXqQt1Tihbh': 0.4001232105218359,\n",
       "             '6400dnyeDyD2mIFHfkwHXN': 0.22536295726702718,\n",
       "             '6Eo5EkmdLvZrONzi046iC2': 0.3776567485151355,\n",
       "             '6P9yO0ukhOx3dvmhGKeYoC': 0.2752720160835255,\n",
       "             '6V9YnBmFjWmXCBaUVRCVXP': 0.1561887159181926,\n",
       "             '6vuykQgDLUCiZ7YggIpLM9': 0.12056755508379578,\n",
       "             '71Mwd9tntFQYUk4k2DwA0D': 0.5490106468656754,\n",
       "             '7BgGBZndAvDlKOcwe5rscZ': 0.5087387310808495,\n",
       "             '7dxKtc08dYeRVHt3p9CZJn': 0.16146444373155444,\n",
       "             '7eyQXxuf2nGj9d2367Gi5f': 0.2913466657800584,\n",
       "             '7gDXyW16byCQOgK965BRzn': 0.4732550728695838})"
      ]
     },
     "execution_count": 118,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "pipeline = [\n",
    "    {'$match': {'gloom': {'$exists': True}}},\n",
    "    {'$group': {'_id': '$album.id', 'avg_complexity': {'$avg': '$complexity'}}}]\n",
    "album_complexities = collections.defaultdict(int, {a['_id']: a['avg_complexity'] for a in tracks.aggregate(pipeline)})\n",
    "album_complexities"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 119,
   "metadata": {
    "collapsed": false,
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>_id</th>\n",
       "      <th>artist_name</th>\n",
       "      <th>name</th>\n",
       "      <th>release_date</th>\n",
       "      <th>gloom</th>\n",
       "      <th>complexity</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>15</th>\n",
       "      <td>7gDXyW16byCQOgK965BRzn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Please Please Me (Remastered)</td>\n",
       "      <td>1963-03-22</td>\n",
       "      <td>0.177208</td>\n",
       "      <td>0.473255</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>14</th>\n",
       "      <td>3nkEsxmIX0zRNXGAexaHAn</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>With The Beatles (Remastered)</td>\n",
       "      <td>1963-11-22</td>\n",
       "      <td>0.152913</td>\n",
       "      <td>0.584974</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12</th>\n",
       "      <td>71Mwd9tntFQYUk4k2DwA0D</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>A Hard Day's Night (Remastered)</td>\n",
       "      <td>1964-07-10</td>\n",
       "      <td>0.215407</td>\n",
       "      <td>0.549011</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11</th>\n",
       "      <td>7BgGBZndAvDlKOcwe5rscZ</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Beatles For Sale (Remastered)</td>\n",
       "      <td>1964-12-04</td>\n",
       "      <td>0.175109</td>\n",
       "      <td>0.508739</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>10</th>\n",
       "      <td>19K3IHYeVkUTjcBHGfbCOi</td>\n",
       "      <td>The Beatles</td>\n",
       "      <td>Help! (Remastered)</td>\n",
       "      <td>1965-08-06</td>\n",
       "      <td>0.220622</td>\n",
       "      <td>0.492679</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                       _id  artist_name                             name  \\\n",
       "15  7gDXyW16byCQOgK965BRzn  The Beatles    Please Please Me (Remastered)   \n",
       "14  3nkEsxmIX0zRNXGAexaHAn  The Beatles    With The Beatles (Remastered)   \n",
       "12  71Mwd9tntFQYUk4k2DwA0D  The Beatles  A Hard Day's Night (Remastered)   \n",
       "11  7BgGBZndAvDlKOcwe5rscZ  The Beatles    Beatles For Sale (Remastered)   \n",
       "10  19K3IHYeVkUTjcBHGfbCOi  The Beatles               Help! (Remastered)   \n",
       "\n",
       "   release_date     gloom  complexity  \n",
       "15   1963-03-22  0.177208    0.473255  \n",
       "14   1963-11-22  0.152913    0.584974  \n",
       "12   1964-07-10  0.215407    0.549011  \n",
       "11   1964-12-04  0.175109    0.508739  \n",
       "10   1965-08-06  0.220622    0.492679  "
      ]
     },
     "execution_count": 119,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "albums_df['complexity'] = albums_df['_id'].apply(lambda i: album_complexities[i])\n",
    "beatles_df = albums_df[albums_df['release_date'] < datetime(1971, 1, 1)]\n",
    "radiohead_df = albums_df[(albums_df['artist_name'] == 'Radiohead') & (albums_df['gloom'] > 0)]\n",
    "albums_df.head()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 120,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
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TTbBiheN2ueQSEOn5fty4sdxzz9K8zj16NFx4obMBdHTA00/DE0/Az38On/0sJBLwvvfB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\n0gWkfWoAAAAASUVORK5CYII=\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622a814d30>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig, ax = plt.subplots()\n",
    "ax.plot_date(beatles_df['release_date'].values, beatles_df['complexity'].values, linestyle='-')\n",
    "\n",
    "fig.autofmt_xdate()\n",
    "\n",
    "for a in beatles_df.itertuples():\n",
    "    for t in tracks.find({'album.id': a[1], 'complexity': {'$exists': True}}):\n",
    "        ax.scatter(a.release_date, t['complexity'])\n",
    "\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 121,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "image/png": 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+leY4Wd3NgrJk/Pb/P/usC7c88UTVNWt8HmwP+PBDF4d9//0uZO3zn1cdNMjl\njZkyRXXWLBe3/Oqrzq2QinQLxdL55DdsUB06VPWPf8xu7HGxYp9/XnXvvXdonz5f2O1JqE+fKV0u\nKItKKt+g3UkffeRcpIlkadOnqy5ZEr8nRgphMVTQE68zZ16uLovcoQplOnPm5Vkdb/t21R/+0Llw\nvv1t5w7pjF8XSEeHy4b45JOq3/++i9UeM0a1rMxNZJ1/vup//IfLnJhJV8mLXiZNqtPy8qaUE4Yf\nfeT80N/7XlbiRG7F6564+eb3FRYpXKEuLe+395iWNwr/g3zfiFta3CrqT35SddQoV/AkLqvTC0LJ\n+52fuStyWf5vwwbV885zy7sff3yXxZHpBdLa6iamHnzQ+Sirq90E1b77uoUm11yj+vDDLqJlT+kD\nMuXrX1f92tc+vv+GG1Srqpyyz4aoWLHd5fXXm7RPn8u1p2l5w7zqN0w3oY4O98R68cWqe+/tFi4+\n/ng0VxEnKAgl73d+5q4IQqnU1zuLY+JE1T//+Z09Flzo6FDduNE9mt5yi7tRHH64ammpO860aS7V\nwqJFXafszQXvvad6wAGqf/jDrn1/+pNz0/hhSYVJgfhBNqu3wxpdE9Yb8datLvf9scc6w+eqqzLP\nKZRPulLysclCuWXLFsrK9qO1tRq3+LaZ0tKhbNmyxfe+Kioq2LGjCXiFRKbFtrZmX9OEHnssLF8O\nd98NU6a8y/btZwHfJ5Fhc8eOf3DjjasoLi7n5Zfh5ZfdopAjj3TbCSe4lLZjx7qJ3nwycCDceSd8\n+cvNjB8/j/XrO3jxxV7ccceFDBs2Iuvj78roV537jH4BsGFD5qmsy8vLQyl3ENdMJvTt61JZn38+\n/P3v8OCDLjXyQQe5rJjnnAMDBuR1iNmTTvvnY8MXn7z/LpRUBPlofNJJ16a07A488Lt6881ucdWG\nDeGaTOpsUb7+epP27ZvbalphtWJ7SpjyMPlJmN1JybS1ufmqM85wk7UXXOCeQsN0fXWGQnDXqAZ/\nEgWlVKqqMos9zxep5g/iqrhyQZzLS0btRvzWW6q33eZKLR56qKtju3Gjf8e3VMMZEORJFFRfUVKQ\n6fzjxxxzbaRuVPmmO2l5jeDo6HB1KGprXVjxKaeo/upX2QUr+BltVFBKPiiCDAeLkmWXboJt8uTL\nInOjijJRs5SjyAcfuGi1Y45xwQPf/KbqypU9O4bfwQKm5H0mH9Ect9/+Yy0qOlyLik7UoqLD9fbb\nf5yzvrJzK2zaAAAS70lEQVQh3f+msXFZZG5UUSXfceiFyKpVqt/6lup++7nUHnPndq/inN/RRqbk\nfSbocLCohQimmxtZu7ZJTzrpSh0z5qt60klXmoL3kaidI3Fjxw7nvjn1VOfOuegi1T//Of1krVny\nISfoCyrIhV5+kcptMHPmN9StZThM/VglbOwirHHonSkEd9LGjW6tymGHuZXkP/hB6rUpfgaKmJLP\nAUFG8gS50CtXxEGGMBMFS/6xxxZoaekg7ddvtJaWDoq9O6mjw+VkuvBCF4p5+umqv/71rrxPa9c2\n6dSp1+q4cVfo1KnXZvVka0o+RwRllThLfqS61LOVCoO1tLQidFZaV8ybN8+z4DVpO1TnzZuX76HF\nhjDHoW/atEmLi/dS2Ftd+uS9tbi4f6huQrnk/fdd4r8JE1zCv0suadLhw/2bozIlH3GCXuiVC8yS\nD4awukMWLVqk0LfT799XFy1alO+hBc6rr6qOGeNvWHRXSt6PfPKIyBQRWSUia0RkVorP/01ElolI\nm4ic6UefYSCo/OWJZfulpWfQr990SkvPiNyy/SFDhlBUJEAVMA6ooqhIGDJkSH4HZgTIASTXYID9\n8ziW/PGJT8B++2WeuqKnZK3kRaQXcBcwGTgcqBGRMZ2aNQMXAI9m219YmD9/ISNGjGHSpEsYMWIM\n8+cvDKTf9nYNpB+/aWpqon//MbiyA/cBq+nXb3S3C60YeyZf52R3qKyspKSkBZe7BuAVSkr+QWVl\nZT6HlTeGDet5cZ2MSWfid3fDlf97Oul9yvJ/3mc/Bc7s4lgZPaoETdCTXLv8mQMVRisMjJw/MwoT\ng1EmCv/fxJxBv36fCt2cQdA0Ni5TOHM3nzycqY2NyzI6Hjl21wwD3kh6v97bF1uyLf/XU5YvX05b\n2w5AgFJAaGtrY/ny5TnpLxckXE5lZdUMGDCOsrLqyLmcwkzQ52Qm1NScQ3PzKpYseYDm5lXU1JyT\n7yHlDdV2+vdfA9wGzAZuo1+/1ai2+96XH6mGU1XljKZPoZsEnTb1vffew3nWfr+zP5jg7Y8ONTXn\nMHHicTQ1NVFRUWEK3kfCmsq3M2FNhRw0FRUVtLdvBM4g8Xt1dNyZk9/LDyW/Hhie9P5AYGOmB6ur\nq9v5uqqqiqqqqkwPlTPyk7+886TVATnsK3fk8iJvaWkp2BtI3HLqx51sf6/6+nrq6+u711k6P053\nN6AI+DuuUkcJ8BIwNk3bnwJTuzhWRv6ofBFUuFoUw8+CDuWLY96WFStW6Lx583oUZhrWEEojNZFJ\nNQxMwYVNvAZc6+2bA5zsvT4K57f/AGgB/pbmOFkJqhrPk9xNvPb3FpJUhn4hSdAK169JxzCdO5YC\nwugJOVfyfm3ZKvk4WnMJdi0JPyzUS8LzEeXhR96WMJ07tnCscIiMJe/Xlo2Sj0IIWbZk8vgeNPlI\nlJXtbx+2c8dSQBQGVjSkh+QjU2OQSjdMlmZX7Elh5solkk0MdtgyOGZjyYfJ5WSkx1INZ0DQj7hB\n+kzDZmnuiXSJsnJ5o8omw2EY/78zZ17unV+Hdvv8ioohYFjRkIwIMlNj0DeUsFma3aGzRZlLRerH\nscOYwbEnT4pxSGJXSARpyfsRJx8K3CKCzcDPcYl/tiIyNSeLCxoaGoCD2D1u/UAaGhoYO3as7/1F\nZaFLMp3j4RMrMltbP74iM9tYbj+OHcaFWmPHju32+eRWtg4CpgIVQBOqA3z5/xr+k4iTv+iiYykq\n2pf29k3MnXtvTn6r2Cj5XYsLpuZ8McjRRx+NiwjdpXRhvbfff+Kw0GXXjaqexE3YrxuVXzfBKK/G\n7N+/P62tbwJLSfwPtm2bQP/+/fM8MqMrXH7HMu9vjkhn4udjI0Jx8pn4TLMlSpNqqcY6adKJu/3P\nTjjhRN/6C6O7JUiiUiIySudwLrGJ14gQhZDGfJBqAjCIeYxCViBhnDzujE0M78ImXo3Ikk7Z3Hnn\nnV4k0iZvYnCTxX7vgZ7etMK8YC4KN6EgCdKSz6EjyPCboCpRZcOulLf7A43A/hQXj2Do0KG42jGj\ngUu8v82+zmNE4f/TXTItABKIjzcDopAKOUjKy8uprZ0OfAaX3/Ez1NZOz82cUDrtn48Ns+TTEpVH\n3XQFm1esWKG9e++1m+XSu/devlly2cTJh41MrLywW8phH1/Q7LpOBnhzVAOyykeFWfLRpqWlhdra\nGbS2LmHz5mW0ti6htnZGaC1WZ0XWA8uAekSKeOONN+jX71CSLbm+fQ/xxZJraWnhggu+yrZtwtat\n/di2Tbjggq+E9v+zJzKxesNuKVvRmN3ZVQioCNgLKMpZISBT8hEg7BdwMk1NTZSVjSJ5rKWlBwMk\nhTmCn7H+7oJpJ/nG0tbWEanKWcnsHhIK3flfZfKdoElUhnruufsKvjKUK/hTRPI5C0U5KQTki5IX\nkSkiskpE1ojIrBSfl4jIAhF5TUSeF5HhqY5jpCYKF3CCdGOtrKzMsSXXuajK/j4dN3gysXqjYimX\nl5czfvz40I0rP+xPIOdsOj9OdzfcjSJRNKQYVzRkTKc2Xwfu8V6fAyxIc6yM/FGFQJTiwLsaay7C\nHDdt2qQlJQN38/eWlAyMvL83k/9VIYeRRgm/CwHRhU9e3OeZIyITgNmqeqL3/lqvw1uT2jzjtXlB\nRIqAt1T1Y7dyEdFsxxNnolTeLuixzp+/kNraGfTqdSAdHeuZO/eegnYHGOGmpaWFYcMOpq2tNy66\n5v8oLv6IDRvWZnS9iAiqmqreti9pDYbh1vgnWA90jovb2UZV20XkPREZrKrv+tB/wRClZfdBjzWM\nuWcMIx3l5eU89NADXHTRJRQVbaO9HR588IHQ5q5JdffobI53biMp2hhGVkTpJmgYQRkmfij59bjn\njQQHAhs7tXkDl7Zxo+euGaCq/0x1sLq6up2vq6qqqKqq8mGIhmEY4SNTw6S+vp76+vputfXDJ1+E\nK+J9PPAm0ADUqOrKpDYzgE+q6gwRORc4XVXPTXEs88kbhmH0kJz65D0f+0xgMS7SZq6qrhSROUCj\nqj4JzAUeFpHXgHeAjyl4wzAMw3+ytuT9xCx5wzCMntOVJW8rXg3DMGKMKXnDMIwYY0reMAwjxpiS\nNwzDiDGm5A3DMGKMKXnDMIwYY0reMAwjxpiSNwzDiDGm5A3DMGKMKXnDMIwYY0reMAwjxpiSNwzD\niDGm5A3DMGKMKXnDMIwYk5WSF5G9RWSxiKwWkUUiMjBNu6dF5J8i8kQ2/e2J7lZKiQpxkidOsoDJ\nE3biJE+2smRryV8LPKeqo4HfAf+ept0PgOlZ9rVH4vTDQrzkiZMsYPKEnTjJk28lfxrwkPf6IeD0\nVI1UdQmwJcu+DMMwjB6SrZLfV1XfBlDVt4DclBs3DMMwMmKP5f9E5FlgaPIuQIHvAPNUdXBS23dU\ndZ80xzkWuFpVT+2iL6v9ZxiGkQEZF/JW1UnpPhORt0VkqKq+LSL7AZuyGGPaQRqGYRiZka275gng\nQu/1BcD/66KteJthGIYREHt013T5ZZHBwM+Ag4D/A85S1fdE5F+Ai1X1a167PwCjgf7AO0Ctqj6b\n7eANwzCMrslKyRuGYRjhJpIrXkUkNm4fEdnL+xsLmUQkkudUKkRkiPc3Fr9NgrjIIyJF+R6DX4jI\nMSIyKhfHjswFKSKfFJHJItJbY/D4ISLjRORxoBYgyjJ5spwHoKod+R5PtohIpYg8BVwJ0f5tAETk\nsyJyp4hcCLGQ5ygReRi4PleKMSi8a2cxbjFpyowB2RJ6Je+lTrgHeAT4GnBzlH9YEdlHRH4M3AN8\nCi/CKYpWiThuAH4LXC0ix3j7Q39epUJEeonIQ8BPgcdU9bp8jylbROSLwF1AIzBRRG4UkU/meVgZ\n4f0+dwH34c65/YE6Eemb35H1HBEpFpH7gP8C7gQWAVXeZ75eP1G4GK8Btqvqp4GvAIcT7SidH+KM\nqQk4K/5LuB3teR1VBngW4QrgHOBu3E04sta8N+69gRWq+giAiJRH3L1xOPALVX0Ydy19BjhLRAbl\nd1g9x/t9fgccr6rzcOlSFPgon+PKkD7A74F/U9UngZ8DYz1Pha/XTyiVvIiMTLo7f19Vr/RenwAM\nBg5P+LKjgCdPmfd2pqpe7r1uAVaIyOg8Da3HiMjZInKViPyrt2sh8CywFOgjIjVeu0g8mSTJ8zlv\n1wXACSLyTRFZgrOy/ktEIrGaO0mez3q73sX9LgO9VelvA8OBCXkbZA8QkQkicljivar+wovgmwT8\nFWfN3yQiY/M2yG7SSZatqvqYqrZ673sD7ar6UawteRGpEJGngQeAh0VktKp+6H1WhbNEHgLOwPnj\nDszbYLtBJ3keSZbHQ4EDgISMobUYRaRIRK4HZnm77hORM1W1w7Po1wG/Bs4Rkb3D/mSSQp6fiMjZ\nqvpP4A6cP74OmAnsBUwTkT0uHswXKeS5X0QmAw24FesPiMjPgCJcHqn9vO+F8pwTkUEi8hucAXG2\niPTz9ifG+0/gPG+x5ofABSIyNPXR8ksqWVRVPXdnQgf/HjjDu3biZcl3OsmuAV5Q1eOBJcANCf+h\nqtar6nhV/QnuMW1f4NDAB7wHupDndzh5Dk98qKqrgXZcordQ4ynt0bjUFD8CZgMzExaUZ5H8BdgA\nnAkQ5rmTNPJcKiKHqeoNwFhV/b2qvgPMB05X1dC6BVLIUwdcDXyAyw77OPCMqtYALwAnet8L6yRs\nP5yf+jLv9edh13hV9a+q+pTX9imgEs9YCiFpZVHVDk/RN3ltjvW787wreaAUIMlKehVAVe8CjgZq\nRGRfr414n60AhuD+MWEjnTx34+Q5LyGPx/8A+4pIUdguOBE5X0SOTfLfvg3s7fkNf4Hzx5+dsEZU\ndR2wAPieiLyPkzc0dEOev+F+H1HVzUlfHQW8EDYX1B7keRx4DThHVd9V1YWq+qDXbjTwq3yMuSuS\n5Bmgqhtwk5I/A7YBnxGRA9J89V+ANwmRb767snjnWgee3vA+9/UJK29KXkQmiUt+9kPvMfkjnP+w\nUkSOFJEjgf8FRuD88AC9ReRUEfkt7oT+R1geNzOUB2AYcFBY3BveI+T+nj/6AmAacLeI9Af+ARyB\nW7kM8GOc1T7U++5Y4H7cje1zqjo/6PF3JgN5zmCXK+N4EXkBOA64Pwy/UQ/luRM4XUT29757vIi8\nirN6/xT86D9OGnl+IiJDVHWb5958DjchflzS9wZ411wjMAW4Kcm/nRcykcVz2xSp6hZcQMmExH7f\nBqaqgW/AIbhHxtNwJ9x8YAbO9/ld4EncSXgU8Bhwqfe9iTgf4+n5GLeP8sxM+u5I4MR8y+CNpcj7\nexjwiPe6Ny7ccy4wCPdI+Xmgr/f5QuAb3uv9gZPzLYcP8sz0Xp8KnJFvOXz8fUZFRJ4f4yKCktte\nCdyIiyUv9fZNBE7LtxxZytI3aX9xLsYW2ERS0iN9By6Ma5mq/j/vs+eA/wD+R1VvEJGDVXWt99lf\n8B5hgN+qaihcAFnI82eSHsnUuTjW5UOGBJ5r6XtAkbhFQANwcwWom+2fCbwF/Ah3kzoXp9AX4h6R\nl3pt38Td0PKKD/I0em1zWq6yu/j4+7wOvB64AJ3ohjyXAxtF5FhV/b33tftxivE5YLiIVKrqc3kY\n/m5kKcuzwAhPlo2q2paLMQbirhGRLwPrgRu8XX/D+dorvPe9cSfff3rv13nf+xpwEbAcwjNJlKU8\ntYRIHnF5/pfhHiH/jpOpDagWkaNh541sDvBDVX0IWAycLyLLcbL+LR9jT4XJEwt5FKc465K+ehLu\n6fgl4AhV3RjgsFPigywvE4QsATzG9MdN8nwDeBEY4+2/HefW+DNuNesRwG+Aod7nV+AsqvH5fhSL\nuTz/Bnwp6f09wNdxKaSXeft64fzUj+PmD/DeH5zv8Zs8sZbnZ0CFt+804PP5Hn8UZQnqnzHc+3sL\nsNB7XYSbgPyc9/4gYB7Qx3vfN4ixFbo8QF/c6ruET3EacLP3+iXgMu/1UcD8fI/X5DF5wrJFRZZA\n3DWq+n/ey9uBkSIyWV2kwmZVTczyX4KLc/3I+05YY15jJY+qfqiq23VX5Mgk3EpcgC/jllo/iXtK\neTEfY+wJJk+4yUSesETQdSYqsgS6gk9V3xKRucC3gUWq2u75rq4DioGLNARhat0lTvKIiwFXXDhk\nYsLxA5xsnwTWqYv3jQQmT7jpiTzqmcNhJeyyBFo0RER6qVvh9Thu8cJ23Gz5a+pm/iNFnOTxLIwS\nXAqGX+ImvN/BPXK+n8+xZYLJE27iJE/YZQnaku8Ql3hsX1xaze+p6jNBjsFP4iSPqqqIVOL8iiOB\nn6rq3DwPK2NMnnATJ3nCLkvg5f9E5BrgQGCWqm4PtPMcECd5xCV8+xLwo6jLAiZP2ImTPGGWJR9K\nvpdGNN94KuImj2EY8cIKeRuGYcSYMGShNAzDMHKEKXnDMIwYY0reMAwjxpiSNwzDiDGm5A3DMGKM\nKXnDMIwYY0reMAwjxvx/dLNl6IZm3tQAAAAASUVORK5CYII=\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622ad7a048>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig, ax = plt.subplots()\n",
    "ax.plot_date(radiohead_df['release_date'].values, radiohead_df['complexity'].values, linestyle='-')\n",
    "\n",
    "fig.autofmt_xdate()\n",
    "\n",
    "for a in radiohead_df.itertuples():\n",
    "    for t in tracks.find({'album.id': a[1], 'complexity': {'$exists': True}}):\n",
    "        ax.scatter(a.release_date, t['complexity'])\n",
    "\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "That isn't what I was expecting. I was expecting the complexity to go up over time, as bands became more adept at contrasting lyrics and melody. It could be because high complexity requires high valence, and bands tend not to become more \"poppy\" over time.\n",
    "\n",
    "Let's test that, by also showing the valence of tracks and albums over time."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 122,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "pipeline = [\n",
    "    {'$match': {'valence': {'$exists': True}}},\n",
    "    {'$group': {'_id': '$album.id', 'avg_valence': {'$avg': '$valence'}}}]\n",
    "album_valences = collections.defaultdict(int, {a['_id']: a['avg_valence'] for a in tracks.aggregate(pipeline)})\n",
    "albums_df['valence'] = albums_df['_id'].apply(lambda i: album_valences[i])\n",
    "beatles_df = albums_df[albums_df['release_date'] < datetime(1971, 1, 1)]\n",
    "radiohead_df = albums_df[(albums_df['artist_name'] == 'Radiohead') & (albums_df['gloom'] > 0)]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 123,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "image/png": 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G+P6/3aNGbYScecYe5v9sEbXf72fq2YM584ylgPrXnCpCXlGUC4CHkSuDAiHE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\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622a722198>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig, ax = plt.subplots()\n",
    "ax.plot_date(beatles_df['release_date'].values, beatles_df['complexity'].values, linestyle='-', color='blue')\n",
    "ax.plot_date(beatles_df['release_date'].values, beatles_df['valence'].values, linestyle='-', color='orange')\n",
    "\n",
    "fig.autofmt_xdate()\n",
    "\n",
    "for a in beatles_df.itertuples():\n",
    "    for t in tracks.find({'album.id': a[1], 'complexity': {'$exists': True}}):\n",
    "        ax.scatter(a.release_date, t['complexity'], color='blue')\n",
    "        ax.scatter(a.release_date, t['valence'], color='orange')\n",
    "\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 124,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "image/png": 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M3k6H7ydCWTH0uQJGLSEm4w+UVXoeWlYJMbu/g5+fh/q6IBT20CS6jHywWtehWP0owrFy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\nTz0Fa9fC0qV6EtasWdCnD5x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CdK2oh92uZQ2Kn8lg0QOjKH4mg6tOK7DsmmwrNhvMnu3p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\nfrcaSEf/Y8INX/V5Dl2fa1z1cfIvoJtSKjbcbji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      "text/plain": [
       "<matplotlib.figure.Figure at 0x7f622a6696a0>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig, ax = plt.subplots()\n",
    "ax.plot_date(radiohead_df['release_date'].values, radiohead_df['complexity'].values, linestyle='-', color='blue')\n",
    "ax.plot_date(radiohead_df['release_date'].values, radiohead_df['valence'].values, linestyle='-', color='orange')\n",
    "\n",
    "fig.autofmt_xdate()\n",
    "\n",
    "for a in radiohead_df.itertuples():\n",
    "    for t in tracks.find({'album.id': a[1], 'complexity': {'$exists': True}}):\n",
    "        ax.scatter(a.release_date, t['complexity'], color='blue')\n",
    "        ax.scatter(a.release_date, t['valence'], color='orange')\n",
    "\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "It definitely looks like the Beatles changed style over time, with the _White Ablum_ / _Yellow Submarine_ (around 1969) being a glitch in the trend. _Hail to the Thief_ and _Com Lag_ are unusual albums for Radiohead."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Conclusion<a name=\"conclusion\"></a>\n",
    "A couple of things have come out of this. \n",
    "\n",
    "One is that the original analysis is very sensitive to how the sentiment of lyrics is determined. That means I'm not too confident about the reliability of results from either fitteR-happieR or this notebook.\n",
    "\n",
    "Another is that the Beatles are undoubtedly better than Radiohead. The happiest Beatles sonds are happier than anything Radiohead have done, and their saddest songs are about as sad as Radiohead. In just about every measure, the Beatles' range of music is larger, and covers, Radiohead's.\n",
    "\n",
    "QED.\n",
    "\n",
    "## Next steps\n",
    "The obvious next step is to analyse a different group. What would Queen or ELO look like? Is Adele more depressing than Radiohead?\n",
    "\n",
    "Another approach would be to apply some machine learning / data mining techniques, perhaps to train a better sentiment analyser, or to cluster songs into groups. Which songs by different artists are most similar to each other?\n",
    "\n",
    "* [Top](#top)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.5.2+"
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