Idea:

The option to have custom grind music override all music in the grind rooms.

Useful for if you've got some good grinding music but every battle lasts roughly 2 turns because you have a really good weapon.

So, whenever I try a Power Star quest, I can only find 11 of 12.

And yes, I checked every room in the game, not counting grind rooms or Goner Kid.

I'm honestly pretty sure it just didn't spawn.