A music box includes a plurality of star wheels, a plurality of sun wheels, a drive unit, a plurality of anchoring members, a plurality of vibration valves, a rotating disk, a detection unit, and a control unit. Each of the plurality of anchoring members is configured to engage one of a plurality of protruding parts of the plurality of star wheels. The rotating disk is configured to rotate according to a rotation of an axis. The rotating disk is formed with a plurality of slits arrayed in a circumferential direction of the rotating disk. The detection unit is configured to detect a passage of one or more of the plurality of slits. The control unit is configured to control one or more of the plurality of anchoring members to disengage one of the plurality of protruding parts, based on a detection result of the detection unit.