While I was playing I decided to test the save feature. I type my save and it loads like normal, however once it got to the map screen a loud noise played. It sounded like an explosion playing past max volume. I try again a few more times and it still played. I just shrugged it off and kept playing. Now that I go back and try it, nothing happens. Here's the info:
Emulator: Biz Hawk
I patched the USA, Europe ROM.
[Edit] Just thought of this, maybe playing the game through to that point will give results. I'll try it out.
[Edit 2] Probably not. Not sure if you need the exact score. I'll try though.
[Edit 3] No results. Maybe it was one time. I don't know any more than I did 18 minutes ago.
I think that the sound is actually the drum track playing at a very high volume. It's probably just an emulator error.