Scratch:CompleteClassList

This page collects all screens to date in StepMania and catalogues them and their elements and classes they use ( children )

It is most likely to be a huge list

When reffering to BGA's, Sounds and the like, they will refer to the screen's own name and declaration. If your screen is [MyCoolDog] and your screen class calls for ScreenMyClass woof music, [MyCoolDog] will ask for MyCoolDog woof music.