JD writes to tell me about BoSSA, the 'bowed speaker array' that's been built at Princeton: "This is a polyhedral ("spherical") speaker array that incorporates some kind of bowed interface to produce ungodly electronic noise/chamber music." The site has lots of video, sound and pictures. It's well worth a look, and considerably more original and musical than the everyday 'For my art project I strapped a MIDI interface to a 
