To more effectively perform staging using light and sound. A staging apparatus 1 is provided with a ball 2 in which a gas is contained, and an internal device 200 including a sound output unit 270 and a light-emitting unit 240 provided in the ball 2. In the internal device 200, sound is outputted from the sound output unit 270 when an operation of the ball 2 is sensed. The staging apparatus 1 preferably receives, from an external control device or the like, a synchronization signal for synchronizing the timing at which sound is output, and outputs sound at a timing that is in accordance with the synchronization signal.