Key?Estimated tonal centre (major or minor). Often uncertain in improvisation. Two keys mean start and middle differ.

shifting (A Moll → C Dur)

Start A Moll · middle C Dur

Stability?How long the same pitch stays in the foreground. High: the harmony holds. Low: it wanders.

shifting

25%

Character?Audible onsets per minute – attacks, accents, new notes. This is not tempo (BPM).

busy

198 onsets/min

BPM reading?The stored BPM may be the fast pulse (eighths, triplets). Tactus is the slower beat you would count along with.

Pulse 129

Harmony?Share of sustained tones versus impulses (attacks, cymbals, percussion). A rough balance, not a verdict on harmony.

77% · 23%

Timbre?warm, medium or bright – a rough estimate of whether the sound feels dark-warm or bright-sharp.

bright

Automatic estimate (librosa). · Mitte 2:13–4:13 Learn more