Mixing from 12B to 10B

How to mix this transition

Use a longer blend window—8 to 16 bars—to let the energy drain feel intentional rather than abrupt. Bring in the D Major track during a breakdown or low-energy section of the outgoing E Major tune, ideally after a kick or snare drop. Roll off the high-mid presence (around 2–4 kHz) on the incoming track for the first half of the blend to soften the tonal shift, then restore it as the outgoing track fades. Avoid stacking this drop with a BPM change or filter sweep; the key change alone carries the energy loss, and layering extra effects will muddy the transition.