Trimpin is a musical genius who builds room-sized art installations that are also instruments. Picture a Rube Goldberg machine exploded all over a room, but one you can play Beethoven on. This year, Trimpin is again partnering with students from Path with Art, a nonprofit that works with homeless people to create original works of art. Together they'll construct a new sound sculpture bursting with poetry, visual art, and, of course, music. Last year, they built a giant wagon that played music when you rolled it around, and I can't wait to see what strange little machine they come up with this year. by Rich Smith