“Based off of Johnny Chung Lee’s whiteboard, we assembled a four-foot rear-projected faux touchscreen.  It’s perfect for our Wheel Of Mashup shows, which depend on an overloaded setup of Ableton Live.  Because it’s overloaded, it’s very difficult to mouse quickly and accurately enough to mash things up on the fly.  The touchscreen solves that.”

http://evolution-control.com/index.php/experiments/videos/45-videos/151-video-mashup-screen-demo