MusicBox Maker is a multimedia application available for Android devices that lets you create your own music box melodies with a simple and intuitive interface. Although there are some built-in sample songs, the real appeal of this app is the ability to create your own melodies.

To use MusicBox Maker, simply tap the three lines on the upper left to display the menu and select "Load". From there, you can select a built-in sample song or import a standard MIDI file to use as a starting point. Once you've loaded your song, you can begin editing it one line at a time. Each line corresponds to an eighth note, and a white circle indicates that it sounds a sound. You can tap on a dark circle to turn it into a white circle and create your melody.

MusicBox Maker also includes a user contribution feature that allows you to share your melodies with others and listen to their creations as well. You can even create an MP3 file of your melody to share with friends or use as a ringtone.

Overall, MusicBox Maker is a fun and unique way to create your own music box melodies and share them with others.