Hi there I spent the better half of a day trying to find this YS Menu thing for my r4 ultra to run pokemon black 2. I was about to give up when I finally stumbled across your thread, so I literally signed up to this site to say thanks Cheers mate.
@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