Okay, before I start, the game isn't Majora's Mask.
My friend rented a PS2 game once and can't remember the name of it. He got it about 5 years ago and we need your help to help him figure out what it was.
Here's the description:
Set on an island. You have a talking guitar which is also the sheath for your sword. The evil guy is some kind of royalty. You can face him every 3 days or not and get stronger. You also have a broken watch. The three days repeat, too. You can play the guitar in it.
Pretty vague, I know. Any help would be appreciated. Whoever gets it right gets 100 brownie points.Worth absolutely nothing
EDIT: And it isn't Guitaroo Man or whatever that game is.