I wonder if the glitch works in that version like on the NES one where if you have an invincibility star that runs out while you're in subspace and you head back out of it right as the subspace music begins, the subspace music continues to play out in the regular level until you enter a pipe or door. I remember stumbling onto that as a kid and it being one of the first glitches I found on my own, and figuring out how to replicate it.