The lasers serve a "independent binary variables" that offer the basis for all the sounds from the machine. Fans can each spin at variable speeds, which creates the range of different noises due to the modulation of the light rays. The inspiration for "Divider" came from the Rhythmicon, an instrument created by Russian inventor Léon Theremin in the 1930s. It was basically the first drum machine, creating sound with rotating discs that broke up light rays that were detected by optical sensors. Don't take our word for it though, watch the demo of Vtol's installation in the video below.