The Song Tapper

"Let's say you have a song stuck in your head, and you don't know the name of it. Never fear! Load up our search screen, and try tapping the rhythm of the song on your space bar while humming the tune. Tap the space bar for each syllable that you sing. It's that simple!"

I'm trying to get it to find 4'33" by Jogn Cage, but I'm not having much luck.