I'm completely stumped here. I'm in the sunken city, in front of the door with 6 notes on the wall in the shape of a 7. I have the little ghost boy there, and I just can't progress. The notes don't seem to do anything. Then again, the strange shape they're shown in, i.e. not just left to right, suggests I'm singing them in the wrong order or something.
A little help please?