Sonic DNA is SongScore's proprietary six-dimension acoustic fingerprint — a radar chart that visualises the core audio identity of any track. Each track has a unique Sonic DNA profile, analogous to a musical fingerprint.
The six dimensions are:
Energy (0–1): The perceived intensity and activity level of the track. High energy tracks feel fast, loud, and noisy. Low energy tracks feel slow, quiet, and calm.
Valence (0–1): The musical positiveness conveyed by the track. High valence tracks sound happy, cheerful, and euphoric. Low valence tracks sound sad, depressed, or angry.
Arousal (0–1): The degree to which a track activates and excites the listener. Related to but distinct from energy — a slow, tense track can have high arousal with relatively low energy.
Danceability (0–1): How suitable the track is for dancing, based on tempo stability, rhythm regularity, beat strength, and rhythmic pattern consistency.
Acousticness (0–1): A confidence measure of whether the track is acoustic (high) or electronic/synthesised (low).
Instrumentalness (0–1): Predicts whether a track contains vocals. Values above 0.5 represent instrumental tracks; values approaching 1.0 indicate a high confidence that the track has no vocal content.
Sonic DNA is used by SongScore's platform algorithms to determine acoustic neighbourhood — which other tracks this track sounds like — and drives the Playlist Matches feature.