As a novel? Borderline unreadable. Terrible dialogue, completely unbelievable characters. Repetition of certain words, phrases, and figures of speech reveal his limitations as a writer.
As a book of ideas? More compelling. Not terribly original; it's basically some common New Age concepts (derived from Asian philosophies like Zen Buddhism and Taoism). I went through a Wicca phase in my late 20s and early 30s, so most of the concepts in the book were not new to me. But I think he's the first to write about applying them to music.
While this review sounds negative, I found the book worthwhile enough to read twice. It does have some interesting food for thought.
Overall I'd recommend it. Just don't expect Ernest Hemingway.
If human beings can't be trusted to govern themselves, how can they be trusted to govern each other?