A mental disorder in which the protagonist believes he is a tree.

"There are a lot of things though that one doesn’t experience as a tree. For example music. Maybe trees feel the vibrations, but I don’t remember anymore. When I was young my mom put me in piano lessons. I begged to go to them actually, but I was horrible. Before the lesson I used to have to sit and wait in the hallway of the music school and from the different rooms you could hear the different instruments being played badly, but from my position in the hallway, it sounded like they were all coming from the same room. A cello screeching as syncopation to an out of tune violin with a piano clank-clanking along. It was beautiful and what I enjoyed more than anything else. Music is one thing that I’ll miss, when I become a tree again."