Abstract: A clam housed mechanical music box for stuffed toys and other amusement devices having two identical frame halves containing and supporting all of the components of the music box. The music box has cylinders which drive music rollers equipped with lifting cams. The lifting cams actuate spring pins to produce the notes of a tune. The drive mechanism for the cylinders is provided by at least one spiral spring attached at one end to a core attached to the central axis and at the other to the cylinder. The drive mechanism also includes a speed regulating mechanism to maintain a steady music tempo throughout the tune, a winding shaft to wind the spring and external power supply shafts to supply power to objects external to the music box mechanism.