One of the principle precepts in science (at least, according to the film industry), is that once you figure out how to do something, you must do it. Why? Because you can. It brought dinosaurs back to life, and it made a neat gun for the people who are still alive. And now, science has brought us the ability to play Guitar Hero III with a MIDI drum kit. But why, you ask? Well, actually it's because the creator injured a finger by rocking too hard with the guitar, so he devised this method so he wouldn't have stop playing altogether. You can read the technical stuff by hitting the "read" link. You can actually watch it work in the video above.