We (iq_132: impl. dink: finetune) already did it with Donpachi
Have you tried Donpachi with the HQ Music mode & soundtrack?
...But, that was easy due to how Donpachi requests each song from the second soundchip, and plays the effects from another.
It would be do-able with cv-1000, but it would be a bit more intense:
Music commands would need to be filtered and re-directed from the ymz700 chip, and effects will need to pass through.
We would also need someone to provide us the soundtracks, maybe you could do it?
best regards,
- dink