This video shows the functionality of the sliding lid of a keepsake music jewelry box hand-crafted by WoodenFingerprints of Holt, MI. The music box switch is a pin. The switch is activated by a groove on the underside of the sliding lid that begins at the surface of the lid and gradually deepens. Very, very well-made and the hand-crafted finger-joints are perfect. If you can get your hands on one of these boxes, it will become a treasured heirloom in your family. Guaranteed! Check him out: www.etsy.com/shop/WoodenFingerprints