Audio Features Integration

Spotify has a lot of metadata. It'd be nice to view them to some degree.

Example:

GET https://api.spotify.com/v1/audio-features

{
    "audio_features": [
        {
            "danceability": 0.808,
            "energy": 0.626,
            "key": 7,
            "loudness": -12.733,
            "mode": 1,
            "speechiness": 0.168,
            "acousticness": 0.00187,
            "instrumentalness": 0.159,
            "liveness": 0.376,
            "valence": 0.369,
            "tempo": 123.99,
            "type": "audio_features",
            "id": "4JpKVNYnVcJ8tuMKjAj50A",
            "uri": "spotify:track:4JpKVNYnVcJ8tuMKjAj50A",
            "track_href": "https://api.spotify.com/v1/tracks/4JpKVNYnVcJ8tuMKjAj50A",
            "analysis_url": "http://echonest-analysis.s3.amazonaws.com/TR/WhpYUARk1kNJ_qP0AdKGcDDFKOQTTgsOoINrqyPQjkUnbteuuBiyj_u94iFCSGzdxGiwqQ6d77f4QLL_8=/3/full.json?AWSAccessKeyId=AKIAJRDFEY23UEVW42BQ&Expires=1458063189&Signature=JRE8SDZStpNOdUsPN/PoS49FMtQ%3D",
            "duration_ms": 535223,
            "time_signature": 4
        },
        {
            "danceability": 0.457,
            "energy": 0.815,
            "key": 1,
            "loudness": -7.199,
            "mode": 1,
            "speechiness": 0.034,
            "acousticness": 0.102,
            "instrumentalness": 0.0319,
            "liveness": 0.103,
            "valence": 0.382,
            "tempo": 96.083,
            "type": "audio_features",
            "id": "2NRANZE9UCmPAS5XVbXL40",
            "uri": "spotify:track:2NRANZE9UCmPAS5XVbXL40",
            "track_href": "https://api.spotify.com/v1/tracks/2NRANZE9UCmPAS5XVbXL40",
            "analysis_url": "http://echonest-analysis.s3.amazonaws.com/TR/WhuQhwPDhmEg5TO4JjbJu0my-awIhk3eaXkRd1ofoJ7tXogPnMtbxkTyLOeHXu5Jke0FCIt52saKJyfPM=/3/full.json?AWSAccessKeyId=AKIAJRDFEY23UEVW42BQ&Expires=1458063189&Signature=qfclum7FwTaR/7aQbnBNO0daCsM%3D",
            "duration_ms": 187800,
            "time_signature": 4
        },
        {
            "danceability": 0.281,
            "energy": 0.402,
            "key": 4,
            "loudness": -17.921,
            "mode": 1,
            "speechiness": 0.0291,
            "acousticness": 0.0734,
            "instrumentalness": 0.83,
            "liveness": 0.0593,
            "valence": 0.0748,
            "tempo": 115.7,
            "type": "audio_features",
            "id": "24JygzOLM0EmRQeGtFcIcG",
            "uri": "spotify:track:24JygzOLM0EmRQeGtFcIcG",
            "track_href": "https://api.spotify.com/v1/tracks/24JygzOLM0EmRQeGtFcIcG",
            "analysis_url": "http://echonest-analysis.s3.amazonaws.com/TR/ehbkMg05Ck-FN7p3lV7vd8TUdBCvM6z5mgDiZRv6iSlw8P_b8GYBZ4PRAlOgTl3e5rS34_l3dZGDeYzH4=/3/full.json?AWSAccessKeyId=AKIAJRDFEY23UEVW42BQ&Expires=1458063189&Signature=bnTm0Hcb%2Bxo8ZCmuxm1mY0JY4Hs%3D",
            "duration_ms": 497493,
            "time_signature": 3
        }
    ]
}

Docs: https://developer.spotify.com/documentation/web-api/reference/#endpoint-get-several-audio-features (page is very slow for me)