Factory Fan Bass is made by replacing the blade of a factory fan with a disk with holes and attaching a light source to the fan. It converts blinks of lights to electric signals and produces sound from a bass amplifier. Different numbers of holes and the rotation speed of the motor can change the pitch of the sound, and turning on/off of the power makes it roar.
Rusty fans are playing industrial blues in a factory area!

Created by Ei Wada + Teruo Takahashi + Nicos Orchest-Lab