18 Note Wind up Music Box Musical Movement - Plays Happy Days are Here Again Sankyo brand mechanical Wind Up music boxes ship from USA owned and based seller. Music boxes can be used as they are or glued to your own craft or wood creations. Music box plays 2-3 minutes on one winding. Perfect for use in DIY crafts, hobbies, gifts and novelties. White plastic shell can be easily removed to reveal the mechanical movement.