Below are a list of all fields available in the files of the dataset. The same list with data from a specific song is available here. Another reference is the code: display_song.py: if a field is displayed, the field exists and there should be a getter for it (if we forgot some in matlab or java, please let us know).
For the analysis fields, we suggest you first read The Echo Nest analyze documentation. The main audio features are 'segments_pitches' and 'segments_timbre'.
| Field name | Type | Description | Link |
|---|---|---|---|
| analysis sample rate | float | sample rate of the audio used | url |
| artist 7digitalid | int | ID from 7digital.com or -1 | url |
| artist familiarity | float | algorithmic estimation | url |
| artist hotttnesss | float | algorithmic estimation | url |
| artist id | string | Echo Nest ID | url |
| artist latitude | float | latitude | |
| artist location | string | location name | |
| artist longitude | float | longitude | |
| artist mbid | string | ID from musicbrainz.org | url |
| artist mbtags | array string | tags from musicbrainz.org | url |
| artist mbtags count | array int | tag counts for musicbrainz tags | url |
| artist name | string | artist name | url |
| artist playmeid | int | ID from playme.com, or -1 | url |
| artist terms | array string | Echo Nest tags | url |
| artist terms freq | array float | Echo Nest tags freqs | url |
| artist terms weight | array float | Echo Nest tags weight | url |
| audio md5 | string | audio hash code | |
| bars confidence | array float | confidence measure | url |
| bars start | array float | beginning of bars, usually on a beat | url |
| beats confidence | array float | confidence measure | url |
| beats start | array float | result of beat tracking | url |
| danceability | float | algorithmic estimation | |
| duration | float | in seconds | |
| end of fade in | float | seconds at the beginning of the song | url |
| energy | float | energy from listener point of view | |
| key | int | key the song is in | url |
| key confidence | float | confidence measure | url |
| loudness | float | overall loudness in dB | url |
| mode | int | major or minor | url |
| mode confidence | float | confidence measure | url |
| release | string | album name | |
| release 7digitalid | int | ID from 7digital.com or -1 | url |
| sections confidence | array float | confidence measure | url |
| sections start | array float | largest grouping in a song, e.g. verse | url |
| segments confidence | array float | confidence measure | url |
| segments loudness max | array float | max dB value | url |
| segments loudness max time | array float | time of max dB value, i.e. end of attack | url |
| segments loudness max start | array float | dB value at onset | url |
| segments pitches | 2D array float | chroma feature, one value per note | url |
| segments start | array float | musical events, ~ note onsets | url |
| segments timbre | 2D array float | texture features (MFCC+PCA-like) | url |
| similar artists | array string | Echo Nest artist IDs (sim. algo. unpublished) | url |
| song hotttnesss | float | algorithmic estimation | |
| song id | string | Echo Nest song ID | |
| start of fade out | float | time in sec | url |
| tatums confidence | array float | confidence measure | url |
| tatums start | array float | smallest rythmic element | url |
| tempo | float | estimated tempo in BPM | url |
| time signature | int | estimate of number of beats per bar, e.g. 4 | url |
| time signature confidence | float | confidence measure | url |
| title | string | song title | |
| track id | string | Echo Nest track ID | |
| track 7digitalid | int | ID from 7digital.com or -1 | url |
| year | int | song release year from MusicBrainz or 0 | url |
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