Tinkling the ivories while riding a bicycle?
Yes, this charming story from The Atlantic via Ivan Kander is truly an inspiration for anyone contemplating unleashing their own strange and wonderful inventions on the world.
http://c.brightcove.com/services/viewer/federated_f9?isVid=1&isUI=1
Gary Frank Skaggs and his St. Frankenstein bike piano in Unwieldy Beast, documentary by Brandon Loper.

Image from Inhabitat article “Pedaling pianist strikes a chord with his homemade piano bike”
Makes me want to find my old sheet music, a piano and brush up on my honkytonk playing!