What makes music... music?
I could say that music is all around us if we listen for it. The woodpecker outside, wind blowing through the cracks in the window, the squeaking of tennis shoes, the honking of car horns. With this we can experiment with different sounds and combine them with rhythms. I let the aesthetic drive dictate the rhythms played and allowed students to use any sound to realize their rhythms with. Some odd sounds for sure, but music none the less!