the background music is from an old-school Nintendo game "Milon's Secret Castle". It's a game that's insanely difficult, and I find it hard to beat, even on emulators.
Looks like that game in Zelda TP inside the fishing shop on the right side, only much easier. Would work as a mini game but thats it. I'd go with Mercury Meldown if I was forced to buy that type of game.