From Café Hayek:

Hmmmm:
What a world we live in. At Midomi, you can hum or sing a few bars of a song and it will find a recording of the song for you along with a bunch of amateur renditions. It’s a great time waster and a way to amaze your kids. It actually works which is marvelous and beautiful, though it may not have your song in the database, yet. Why is it called Midomi? Check out the logo.

(HT: MyDigiMedia)