Currently step 13 is as follows
13 Go down the Ladder in the northern Room and go through the Gate while wearing Leather Gloves. Grab the Music Notes, open the Cupboard and grab the Roots and the Notes as well, then go back through the Gate and play them: upper E, upper F, upper E, upper D, upper C, lower A, lower E, lower G, lower A.
Should read
13 Go down the Ladder in the northern Room and go through the Gate while wearing Leather Gloves. Grab the Music Notes, head back through the gate and play piano: upper E, upper F, upper E, upper D, upper C, lower A, lower E, lower G, lower A. After playing the piano successfully, search piano and acquire To Do List, Shrinking Recipe, and 2 Shrunk Ogleroots.
The major difference is that the items required are NOT in the cupboard as previously stated, they are instead inside the piano only after you play the notes successfully. (The piano is the safe, as mentioned in the Diary from the table inside the witches house)
