Mixing from 10B to 4B

How to mix this transition

Bring the incoming track in at a phrase boundary of the outgoing track—never mid-phrase, or the clash will sound sloppy rather than intentional. Use a sharp EQ kill on the outgoing track's mids (500 Hz–2 kHz) for 4–8 bars before the swap to create sonic space and signal the shift. Overlap the kick and bass for 2–4 bars to anchor the new key, then pull the old track's low end entirely. The tritone interval itself will create dissonance; lean into it by keeping both tracks' fundamentals present during the blend, then resolve by dropping the old track cleanly. Avoid long crossfades—this move works best as a hard cut or very tight 1–2 bar transition.