there's a 6 shape combination that supposedly does something

every shape except for purple is correct, and i have no idea how to exactly trigger whatever it's supposed to do. i tried switching songs on the boombox, calling car, using the draw pad.

from where i found the other shapes, they were found in places where hit single songs originally were (except for red and blue). i'm out of ideas. who knows, maybe it's just there to fuck with us

update: i found in which orientation purple is supposed to go, but yet again, no results

update 2: turns out i just had to move stuff around that were already in place (orange and yellow). it's just the old cheat room right before saving got implemented. you can't get newer stuff with it like the sewer badge