A music disc used interchangeably in three Tomy' musical toys: the Tuneyville PlayerPiano, Tuneyville Choo-Choo and Tuneyville Pipewagon. A battery-operated fan drove air through two to eight pipes (depending on the toy). The projections on the plastic disc contacted actuators that raised and lowered pads covering holes on the pipes, playing it like a flute. The toys came with four discs in the box.