There’s a cool bug in Super Mario 2 that not many know about. No, I’m not the first to report on it, but I can’t ever recall seeing it in any magazine or website.
The bug lets you play the over world theme from Super Mario 1 outside of subspace. In subspave it plays, but only for 7 seconds and then you’re forced out. With this trick, you can hear it to your hearts content!
How does it work? Check the video! Stay to the end because I let the music run without any interruption.