Song Search by Tapping

Song Search by Tapping - Search for music by tapping the rhythm of the song's melody.

Seriously, who CODES this stuff? I tried tapping in the Bonanza Theme song and they didn't get it. I tried tapping in some of the chorus of Brown Eyed Girl by Van Morrison. Also no luck. Lady Madonna was a hit on both for some reason. I did the entire first verse of Jesus Loves Me (without the chorus) and it was a match. Of course, so was "Dreidel, Dreidel, Dreidel" which was absolutely hilarious to me...