....And it's also (not surprisingly) froze at emulators, well this is clearly an issue.
(But I can still save scumming my way though, recently passed the dungeon)
@Xdqwerty, Osu! Tatakae! Ouendan! is the Japanese version of the game, different settings/characters/songs but otherwise identical mechanics. I played that before I knew about Elite Beat Agents lol. Both fantastic games https://en.wikipedia.org/wiki/Osu!_Tatakae!_Ouendan