Here is a vid of it in action
youtube․com/watch?v=dWa7c5WzXvW
Play Music!
It has different shaped hole on the inside (As you'll see in vid) that make diff sounds on each letter. they make the notes of Never gonna give u up
For ease, I added STL, and Gcode (use at own risk of Hotend crashing and bed scrathes or worse)...
This is the song u can play,