I took my big lyre (see below) to Woodstockhausen 2003. Here's a 40-second video of the lyre in action. The video is 6 megabytes, in mpeg format. The first 20 seconds show the lyre playing pre-recorded music, and the second 20 seconds show people dancing on the pads and generating their own music. See my Woodstockhausen archive for more details on Woodstockhausen 2003 and previous years.