how do i change the music of a stage?

It was possible. I just didn't do it. You can always change the music if you know how. If you dont then you can just message me and ill tell you how.

I understand if it wasn't possible, but why doesn't this stage use the actual terminal velocity theme? The one that gives all the vibes and nostalgia from the original level

Maybe remove the walls on the side? I like being able to KO my opponents