Johhnyrandom made a great-sounding instrumental song using sounds generated from a bicycle. It's called Bespoken.
Listen to separate tracks and samples on his Soundcloud site.
Buy Bespoken on iTunes.
Read more in Music at Boing Boing
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects