Conceived and built in 1931 by musical forward-thinkers Leon Theremin and Henry Cowell, the Rhythmicon was a musical keyboard instrument. The online one made by Nick Didkovsky, of Dr. Nerve fame, in 2003 takes the instrument to it's next logical step. In the hands of some of today's leading sound artist/composers, the Virtual Rhythmicon makes music that shimmers, pulses and haunts with a beauty that would do it's more famous cousin, the theremin, proud.