Spotify analyzes every song in its library and uses that data to give better recommendations to you. Synthetic gives you a finer tuned control over just what you find based on song features you like. Each song is scored from 0-600 (600 being the highest) and the most closely related songs are returned in 30 second previews so you can go through more songs faster.
Adjust the levels of filters on different musical attributes from a specified musical selection. Calculated results are sorted and queued in the player based off of the difference between the input values and each track's actual aggregate statistics. Preview 30 second snippets from the result set and add them to your Spotify library by logging in. Filter by one or more of these metrics:
Energy a measure of intensity/activity based off of dynamic range, loudness, timbre, etc.
Valence the musical positiveness conveyed by a track, higher valence tracks sound happier
Acousticness a confidence measure of acousticness of a track, a higher number represents a higher confidence
Danceability how suitable a track is for dancing, based off of tempo, rhythm stability, and beat strength
Popularity popularity of a track, based off the total number of plays and how recent those plays are
Vocalness how present vocals are in a track, a lower level represents a track that is more instrumental
Genre only available after logging in and selecting the Spotify Library, choose 1-3 genres to find songs that correspond