You will begin this mission in the same location that you chose while dealing with Willow Blue. Use the door on the right, go through the belfry and into the corridor, and then continue on, until you find yourself in the room shown in the picture above. Use the door that has been marked in the picture.
You will enter a small corridor. Go through the marked doorway.
You have reached the area of the music rooms. There are ghosts  in your path, to which you have to talk to. After all of the dialog options have been exhausted, the ghosts will separate, and you will be able to pass. Head forwards, into the unknown area .
You are now in the room with a clock , but you cannot set a starting spot, because you are not in possession of any of the keys. Use the door indicated in the picture above .
In the next room, advance in the indicated direction.
You will find a key in the room you are about to enter. Now you must simply return to the clock via the same path. Fix the clock, and then synchronise it. After that is done, use the F1 key, and restart the day.