Remember the 1970's show "Name that tune" in which people try to name a song by hearing a few musical tones? Well, we've come a long way since then!
Now you can go to a site like http://www.midomi.com/ and either sing it or hum it (using a computer and a microphone) and their database will search for the sound and give you back some possible songs. At midomi you can also create your own profile, sing your favorite songs and share them with your family and friends. Have fun and give it a try!