At the end of Chapter 11, you’ll have to solve a puzzle involving musical notes. In the center of the first floor is a device with seven numbered buttons. To continue the story, you must play the correct sequence of notes.
On the second floor, there’s a control room with a telephone. When you interact with it, you’ll hear a sequence. Unfortunately, solving the puzzle using this clue requires excellent hearing. If you, like most other players, lack it, use our solution: 1, 2, 4, 6, 4, 5, 3, 7, 2.
Moreover, once you play an incorrect sequence for the first time, a nearby locker will open, containing a note with that sequence.
