Mixing from 9A to 1A

How to mix this transition

Treat this as a planned transition with a clear break point: bring in the 1A track at a phrase boundary in the 9A track, ideally after a 16 or 32-bar section closes. A 4–8 bar blend works better than a long crossfade because the harmonic distance demands clarity rather than overlap. Use EQ to isolate the incoming track's low-mid fundamentals during the blend — the A♭ root will sit differently in the mix than E, so a slight high-pass on the outgoing track in the final bars helps the new key breathe. Avoid riding the incoming track's bass underneath the outgoing kick; swap the kick on the beat to anchor the new key.