This “choir of rotating sirens” creates an audio visual spectacle that is essentially a live experience. While you explore the space, the performers move about within the mass of swirling metal machinery, dodging and ducking the rapid movement of the rotating arms. The sound pulses past the listener with a Dopplerlike effect, while the cluster of closely tuned oscillators creates a rich and pervasive sound world. The closeness of the tuning of the separate tones sets off a series of amazing overtones that evoke the sense of an ethereal choir.
Photo Credit: Steven Hicks