Do you ever mess with the sound assign option in DXC? I usually give Stage 3' the Cross Your Heart theme, Stage 4 with Dance of Pales (it will always be Dance of Pales, dammit), and Stage 5 with the remixed Opus 13. I'll usually give Stage 2' and Stage 4' their original Rondo themes. Stage 2 gets Heavenly Doorway.
Also, I pair the Dracula battle with Prologue.
How do you all customize DXC's soundtrack?