The painting by the door? Because if so we tried those and it still didn't work. Maybe it'll work now? At the time it wasn't working, we tried the painting note, then just started mashing keys and finally gave up when we couldn't find anything online to explain how to do the damn thing.

press the 5th, 3rd, and 1st button from the right sequentially

BS

start at the end AKA the right side and do the order that Praja said it work's

引用自 Praja：

press the 5th, 3rd, and 1st button from the right sequentially

where are the buttons

i had to come here and look for this, because not being familiar with musical scores, i just pressed what i saw under the puzzle and that did "not" work.

there are notes under the sun painting the switchs are for notes use switchs according to notes.

So notes go from A to F (9 options), There's 5 lines on the sheet, on the lines are full notes, between the lines are half notes. To solve the puzzle you need to insert the notes that are on the sheet.
The sheet shows 3 notes, the first note on the sheet equals the third option from the left on the board because it is on the same line.

The rest should be easily "solved" now, but the answers are already given

Thanks for this. Idk why but I might have had a conflict because the notes people say should have shown up did not show up. They usually do, and idk what caused them to disappear