this is (theoretically) very cool

The Musipedia allows you to search for music in various categories by singing a tune into your computer microphone or entering it in with the piano keyboard feature. I've got it to work every time with the piano keyboard feature (although I have trouble getting the rhythm right with the mouse; anyone else have this problem?), but I don't think my computer microphone is sensitive enough to pick up my singing. That or my singing is worse than I thought, which is possible. Still, I was impressed when I entered the minor version of Frere Jacques and it correctly identified it as Mahler's 1st symphony. Cool.