The artist Ray Lee uses the Theremin as a starting-off point for his sound-rich sculptural installations and performances. His “Choir” places 16 spinning devices in a single space. The setup looks like a compact windfarm, and the resulting sound is a rapturous, churning cloud of tones (MP3).
A more recent iteration of that practice, “Siren” nearly doubles the number of tripods and adds LEDs to mark their circuitous paths; the sound is an equal mix of kinetic energy and bliss (MP3). The image to the left, borrowed from Lee’s website, shows him adjusting an installation of “Siren.”
Just yesterday, Lee presented a new piece, “Force Field,” at the Institute of Contemporary Arts (ica.org.uk) in London: “By interacting with the electromagnetic ‘force field’ that surrounds the theremin (the instrument you play without touching), Lee activates and controls a series of kinetic sound machines, creating music and movement from the ether.”
There’s a lot of video at his website, invisible-forces.com.