Aw, the front page behavior changed. Before if you removed all sidebar content with the customization, the main blocks would become bigger and fill the rest of the space, now it's just empty.
@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