I have just discovered the greatest book--Music, the Brain, and Ecstasy, How Music Captures our Imagination by Robert Jourdain. This is exactly the book I wanted. He's going to explain everything. You see, it all has to do with our brains.
I always read everything about the brain. I stole the March National Geographic from my doctor's office because it has a long article about the brain. The only musical thing that interested them was absolute pitch, apparently a learned facility much more common in the orient.
Jourdain goes through everything very quickly but tries to cover every conceivable topic. I'll let you know what he has to say.