Apps on the web need to be completely and insanely creative before they pique my interest! And so by that rule, here is one that is so cool. Tap away on the space bar while you hum away a song, and let the website tell you what song it is. Now, I dont know for sure if it works perfectly fine, but love the cross between the analog and the digital worlds on the internet. Song Search by Tapping - Search for music by tapping the rhythm of the song's melody.