This was an exercise that allowed for user input to change music MOD files that would playback and stop based on selections from the keypad. It also has a screen that allows you to control a faux mini-Lynx driving game on-screen while you’re listening to the music playback. Other controls allow you to speed up or slow down the cycling colors of the Jukebox and stop a song, increase/lower volume, etc.
See a video in action: https://www.youtube.com/watch?v=hWQ85itoRKE