Mixing from 5A to 9A

How to mix this transition

Treat this as a deliberate transition point, not a blend-through. Bring in the 9A track at a clear phrase boundary — ideally after a breakdown or 16-bar section in 5A — to let the harmonic shift land as a decision, not an accident. Use a 4–8 bar overlap with high-pass filtering on the incoming track to ease the tonal change, then EQ-kill the low-mids of 5A as you push up 9A's fundamentals; the fifth-up relationship means their bass registers won't sit cleanly together. Avoid long, gradual crossfades; this move benefits from a sharper, more intentional swap that lets listeners feel the lift.