Touhou Project? Isn't it that shoot-em-up game were you have to fight an enemy that fires 850 shots at a time at you and you have to fly through all of them without getting hit?
And there's so much more of this stuff on YouTube. I've got three channels subscribed that do nothing but upload Touhou music remixes(Techno, Classical and Rock channels...) and all together I think they've got over 300 pieces of music uploaded.