Ball Droppings is a Chrome Experiment game focused on interactive play and the creation of music. A player draws lines to catch the ball. Each bounce creates a sound whose pitch depends on the speed with which the ball lands. It’s a fun little game, and my first endeavor was to try to create a well-known song. I didn’t succeed (nor did I find any fun youtube videos that would suggest others did), but I did create some fun little beats, and was even able to throw in a chord or two.
Also of interest, Dain Saint and William Stallwood’s Auditorium is an iPhone game that combines gorgeous colors, fun puzzles, and beautiful melodies. It’s reminiscent of Brian Eno’s colorful music apps. Auditorium is available through iTunes or can be played online.