Super Mario Bros. 1/Lost Levels Glitch

[ColecoFan1981]

I seem to remember executing some glitch on the Super Mario All-Stars versions of Super Mario Bros. and its Japanese sequel that we call Super Mario Bros.: The Lost Levels.

What is this glitch? It involves completing a castle level. It involves not triggering the "victory" music when you defeat Bowser (or not) and save a Toad. But I want to find out how many of you also did this glitch, and how to do it.

~Ben

[Jorpho]

You're not making much sense, I'm afraid.

This is known:
http://themushroomkingdom.net/bugs/36