I am just finishing up "How Music Works" by David Byrne. (yes he of Talking Heads). A hugely ambitious effort, but the guy manages to be very succinct and lucid, using his own experiences and theories to posit very interesting ideas on How Music works, Performance. Collaboration, Technology, Business, How to make a Scene etc. I have a very extensive Music literature library (Theory/practice,Artist Biographies,Scenes,Technology etc) and have read much about the subject but have still really enjoyed reading another viewpoint and would not hesitate to recommend it.