Bouncing balls dropping from the ceiling create an audio experience when you place reflectors in their way. Pitch is relative to ball speed. You can tweak a few of the environment variables, and mess around.
Since the balls drop at regular intervals, a metronome is formed, and this rhythm leads to music…
www.balldroppings.com/
Wheeeee! Bing bong…. bee bee boo… boo… bee…. bee boo baaa baaaawww…. bing….. bwing…. bing…
succinctly outlined 🙂