If you're at all interested in improvised music, and you're not daunted by a little science, then you should take a look at David Borgo's excellent new book Sync or Swarm: Improvising Music in a Complex Age.
It's hard enough to write well about music, and I would imagine it isn't easy to write well about chaos theory. (Trust me, I've never tried.) So to bring the two together so fluently is quite an achievement. Oh, and the book comes with a free full-length CD featuring performances by Evan Parker, the Sam Rivers Trio, George Lewis, and Borgo's own collective, Surrealestate.