First off great job. I think the cinematography is very good, and the editing is great.
I do agree that the music was a bit distracting. For all of the scenes up until his skateboard ride I felt that the music detracted rather than helped. For me, one of the strongest moments was where the music dropped out and you had that beeping sound like a monitor in a hospital room or something. I would remove all of the music up until that skateboard ride and fill it with sounds from the world. Put in the sound of traffic, cars driving by, trucks off in the distance, horns honking far away, dogs barking in the distance, birds singing, etc. Because of the nature of the subject matter you could also play around with the audio quite a bit to enhance the feel, meaning, put some weird sounds in there that don't exactly fit, a plane flying too low, people talking who aren't nearby, whatever. Put weird reverbs on them, and have them fade from one into another. Since a lot of this would be all in his head, you can use it to your advantage. You did that with the editing and the cinematography to great effect, but I think you could do that with the sound to great effect too.
Overall great job. Very impressive.