Extra bonus: WNYC's piano, as prepared by Hauschka

Hauschka (Bertelmann) has been known to clamp wedges of felt, leather, and rubber between the strings, but he also adds a ping pong ball, cork, guitar strings, tambourines bells, and something like rosary beads. The result is notes with strange overtones, odd little clicks and noises, and a general off-kilter feeling that adds a real vibrance to his songs.