In this segment for Jim Metzner’s Pulse of the Planet, experimental musician Bart Hopkin talks about one of his colleagues, Tom Nunn, creator of the Crustacean. The sound of this thing is incredible – like an underwater orchestra. Hopkin also talks about how some of the best music evolves from instruments you can’t control.

Musical Instruments – Steel Vibration: How can you keep a piece of steel vibrating for a long time? Are the balloons ready?