This is already made, but a better version...
Sorry IDK what it is.(Forgot) but I have some sort of mod that if I press F6(That's what I keybinded it for) And a GUI pops up with a list of the songs you have.
Just select the music and click "Play". After that, the GUI will disappear and if you bring it back up again there's a "Stop" button.
Or was that made by you too?
If it was, why make dis? It's easier than to use events.