Musipedia

musipedia.gif Typke, Rainer. Musipedia: The Open Music Encyclopedia. 2007.
      http://www.musipedia.org/

Got a song stuck in your head? Can you play it on a keyboard, hum, sing or whistle it? Then try musipedia! Input part of the tune on the virtual keyboard, then search their database. Results turn up similar melodies that you can see and listen to, with composer, title and other information about the work. Search by notes, contour, singing or rhythm. Entries are user imputed, so it may not contain what you’re looking for. Also, since this is a wiki, don’t forget to fact check with other sources!