Legend of Zelda Glitches - Indoor Music
There are two methods to perform this glitch.
- Purchase the Blue Ring.
- Exit and re-enter the store while your Rupee counter is still counting down.
About 50% of the time, when you re-enter, the overworld music will continue to play while inside.
There are other ways to get the glitch to work as well. The only requirement is that your Rupee counter is changing as you enter a cave/stairway from outside. This can be done after finding a 100-Rupee secret, after being slapped with a Door Repair fee, or after winning/losing big at the Money-Making Game. I also remember once getting this to happen after an enemy dropped 5 Rupee right on a stairway. Note that in the above instructions, you don't have to re-enter the same place you exited, provided you can get to another place before the Rupee counter finishes the transaction.
- Go to any screen that contains a grotto.
- Put medicine on B and go next to the entrance.
- Enter the Grotto. Right before you enter, use the medicine.
The overworld music will play in the grotto after your life fills.
This only happened to me once, when I was healing before buying medicine for level 6.
Based upon both methods, I believe that the only requirement is that SOMETHING is changing when you enter a grotto. The game forgets to switch off the music upon entering the grotto, causing the glitch.