"....walk across the rear of the gallery in front of an enormous wall piece called "ZOE," Greek for life, and its light-sensitive detectors tell software in a remote computer to play synthesized music.  Moving around, you can hit different chords and sustain them at will, thus composing by throwing your shadow.

Think of it as Jungian Biofeedback, training you to get in touch with your shadow side..."
— Teresa Annas Forces exhibition, Contemporary Art Museum, Virginia Beach, Virginia