I'm not particularly a drum fan, but this is an amazing feat of skill and technology.
Since I injured my middle left finger playing Guitar Hero 2 way too much when it came out, I've been dying to get back to playing it. ... so I thought "wouldn't it be great to be able to play Guitar Hero on the drums?" So I thought about how that might be accomplished... researched, implemented, borrowed, and here I outline the finished product.
Even just listening to the drum kit during the song sounds great. For more information, Egyokeo has also been kind enough to outline the full build.