30 Note DIY Hand Crank Music Box Movement + 10 Pcs Refill Blank Paper Strips Puncher Customize for Your Own Songs Love music boxes but never seem to be able to find the song you really want? This item can help you DIY your own songs. Type: 30 Notes; Material: Alloy+ABS Plastic Music Movement Size: 10.7 x 6.9cm / 4.21 x 2.71"; Strip Size: 66 x 7cm / 26 x 2.75" Write your musical note on the paper strip, and use the puncher to punch the holes.Then put it inside the music box movement and stir the shaft,then it can make sound. You can see the below description to learn how to create your own music. You can also use an app to help you to arrange songs before you start punching holes. There are smartphone apps for composing songs (you can searched "music box composer" to find yours).