Song Tapper: Search for music by tapping your spacebar

Lisa found this really cool website through a music educators mailing list she's on: The Song Tapper. Tap out a tune with your spacebar and the site returns you a list of songs that it probably matches. I tried this with the Dukes of Hazzard theme and the Imperial March from the Star Wars movies, and the site figured both of them out. May be good to bear this one in mind if you ever know what the song sounds like but don't know its title.