Nice and simple Idea
I like it. But it wouldv been nice if you would'v used the arrow keys and the A key. the harp strings are a bit hard to click because they are so thin. This flash makes me a bit nastaulgic... when I used to play Ocorana Of Time all the time... Beautiful background are too! If your ever thinking about going back and improving this game-ish thing might want to improve the quality of the sounds, and then maybe add some more instruments that you can play, Oh and you kno how in Ocorana of Time when you played a song there would be a playback and the whole song would play again, You should add a setting that does that! :D I make music myself so actually I wouldn't mind making you the music if you asked! ;)
Oh and then add another setting where ppl could create their own toon that they can play back!
Hey If your interested, I'd love to shed more ideas and help such as making you music for the improvement Ideas I mentioned!