The Wurlitzer organ of the Byrd Theatre is housed in four rooms on the fourth floor above the stage. The basement also houses a vacuum blower for the piano and an elevator room which raises the organ console to stage level for performances. There is an electrical and pneumatic switching system that aids the organist in choosing which pipes and other devices to use (all of the pipe work, bells, drums, and other effects are acoustic and not electronic). As the sound level of the pipes themselves cannot be changed, the sound levels in the actual auditorium are controlled by large slats called swell shades that open and close to control the volume and a tone chute that carries the sound from the fourth floor.