5.5. BPM Constraints

Same Mix BPM accepts tracks whose detected BPM rounds to the Mix target. Playback remains native at a 1:1 rate.

Allow pitch-shifted tracks keeps those native matches and adds tracks whose target-relative playback ratio is within five cents of a nonzero integer-semitone shift inside the selected range. Those tracks play at the Mix BPM, and their keys move by the same integer number of semitones before Allowed Keys and transition matching are evaluated.

Ignore BPM leaves every track at its native playback rate and does not use BPM as a planning constraint.

Harmonic DJ intentionally does not contain a pitch-preserving time-stretch engine. When pitch-shifted tracks are allowed, speed and pitch move together as they would on a variable-speed deck.