Simple but amazing

I came across this link in a message board thread at The Escapist. It's a black and white grid. You click on the squares in the grid and each square corresponds to a music note. You can make a pretty cool tune even if you're not musically inclined.

http://seawitchery.tumblr.com/post/4070384205/i-started-out-clicking-strategically-and-by-the

Check it out!