This page of our guide to Life is Strange True Colors contains a description of Part 1 of Episode 5. It covers the visit to the psychologist's Office, documents and getting to the guitar.
This chapter begins with a conversation with the psychologist. She's asking you how you feel after moving to town.
After you talk to her, you'll be alone. You can look around the office. Look through the paintings, diplomas, documents, things on the computer and other types of papers.
There are some papers about Alex's health on the desk. They will tell you that Alex is 21 years old, what symptoms she has and that she has not been diagnosed. Remember the numbers that will show up on the file - 53322.
Next, look at the pictures. Alex will understand that this is not the office she knows well. One of the photographs shows a guitar key.
Take the photo with a key and shake the object you need out of it. It is necessary to leave the office.
After you get the guitar key, approach the case. There's a place to enter the code on it. You already know it.
You probably remember the numbers from the file. Just type 53322.
Then you just have to fix the guitar and play on it. This will take you to the next location.