Mixing from 3A to 3B

How to mix this transition

Blend over 16–32 bars to let the relative major settle; the shared key signature means you can layer the incoming track's melody over the outgoing track's bass and drums without dissonance, but rushing the swap will feel abrupt. Use a high-pass filter kill on the outgoing track's mids and highs in the final 8 bars to soften the minor tonality, then bring the new track's major-key elements (bright pads, open chords) into the midrange. Timing is critical—drop the new track at a phrase boundary (end of a 16 or 32-bar section) so the major tonality lands on a strong beat. Avoid stacking this flip with a simultaneous drum pattern change; let the harmonic shift do the work first.