Definitions for the data sources
A quick overview of the definitions of each data source.
| danceability | Danceability describes how suitable a track is for dancing based on a combination of musical elements. A value of 0.0 is least danceable and 1.0 is most danceable. |
| energy | Energy is a measure from 0.0 to 1.0 and represents a perceptual measure of intensity and activity. |
| key | The key the track is in. Integers map to pitches using standard Pitch Class notation . E.g. 0 = C, 1 = C♯/D♭, 2 = D, and so on. |
| loudness | The overall loudness of a track in decibels (dB). |
| mode | Mode indicates the modality (major or minor) of a track, the type of scale from which its melodic content is derived. Unlike other measures, which are represented in a range from 0 – 1, this is a Boolean string in which Major is represented by 1. |
| speechiness | Speechiness detects the presence of spoken words in a track. |
| acousticness | A confidence measure from 0.0 to 1.0 of whether the track is acoustic. 1.0 represents high confidence the track is acoustic. |
| instrumentalness | Predicts whether a track contains no vocals. |
| liveness | Detects the presence of an audience in the recording. Higher liveness values represent an increased probability that the track was performed live. A value above 0.8 provides strong likelihood that the track is live. |
| valence | A measure from 0.0 to 1.0 describing the musical positiveness conveyed by a track. Tracks with high valence sound more positive. |
| tempo | The overall estimated tempo of a track in beats per minute (BPM). |
| duration_ms | Duration of song |
| time_signature | The time signature (meter) is a notational convention to specify how many beats are in each bar (or measure). |
| popularity | Song Popularity (0–100) where higher is better |