>>719160612
Actually let me give you a tip if you end up getting S+ because they are retarded and don't tell you how the background music works
>go to Settings --> Sound --> BGM
Okay now you see all these entries that are set to the same song by default. The main puzzles are seperated by characters, so you have a category for Miku (blue), Rin (red)... and so on.
Each entry here represents one of these categories, meaning whatever you put up on the first entry (blue) will play during Miku's levels. I just put everything on Shuffle to not always hear the same song. Hope the point comes across, it's so stupid