Tip: If your level contains elements that temporarily change the music to a global song (such as a P-Switch or a Star), that music will not stop playing after the intended end time if the music bypass setting is set to 00.
Works as intended, so, accepted. While not technically a fix, it's a neat little change over the vanilla shooting mechanic.
Regarding the submission note: Having the mechanic be toggled with freeRAM could be a useful addition, but it isn't required unless you wish to include it. Perhaps it could be added in a future update.