You align the notches with the fold on that card and press in place. Then you remove the little plastic protective sleeve to activate the music. You then refold the card, right side first, to conceal the movement. It will take one or two applications, before you discover the easiest way for you. Be sure keep ALL glue away from the pull tab that opens and starts it.
Melody plays each time a coin is inserted.
Long lasting batteries included. Movement size may vary slightly.