It's the best for creating music for a 8-bit game and not getting any copyrights! Also for bass or other thing you can get other programs or if the code of this make another thing like this but with other instruments it would be such a great combo!
My suggestion is to have the circle button not only played the music but when clicked a menu pops up with option to play the beauty or change the instrument :D
Edit: also enable the dev kit mouse for better navigation :)