A game that came to my mind for me when it comes to being shitty but has probably the best soundtrack setlist in the series is Megaman X6, arguably one of the worst Megaman game in comes to gameplay and difficulty, but one thing that makes it crazy is the soundtrack, it’s varied and they slap much harder than even the first Megaman X
Final Fantasy Mystic Quest on the SNES.
The game is mind numbingly easy. To the point where you can just mash the a button through much of it.
However just listen to this battle theme:
YouTube Link