I have suggestion: make an item that lets you play music by pressing keys on keyboard, like piano.
I have made such mod in another game, and it worked well.
This feature requires possibility to detect input from keyboard, and preventing that input from affecting anything else except music playing, and possibility to send and recieve packets without fluctuation by lag, I am not sure if all of that is possible in byond.
If it is approved, I can try to make this feature myself, though I dont have experience with changing SS13 code.