| Acousticness | The relative metric of the track being acoustic | 
            
              | Danceability | The relative measurement of the track being danceable | 
            
              | Duration | The length of the track in milliseconds (ms) | 
            
              | Energy | The energy of the track | 
            
              | Explicit | The binary value whether the track contains explicit content or not | 
            
              | Instrumentalness | The relative ratio of the track being instrumental | 
            
              | Key | The primary key of the track encoded as integers in between 0 and 11 | 
            
              | Liveness | The relative duration of the track sounding as a live performance | 
            
              | Loudness | Relative loudness of the track in the typical range [-60, 0] in decibel (dB) | 
            
              | Mode | The binary value representing whether the track starts with a major (1) chord progression or not (0) | 
            
              | Popularity | The popularity of the song lately, default country = US | 
            
              | Speechiness | The relative length of the track containing any kind of human voice | 
            
              | Tempo | The tempo of the track in Beat Per Minute (BPM) | 
            
              | Valence | The positiveness of the track |