I've just finished Dan Levitin's* book This is Your Brain on Music, about how the human mind perceives music. If you're into your amygdalas and cerebella, this is the book for you.
My interest was that the back cover promised to tell me the secret of why music you first listen to as a teenager seems more interesting than any heard later on. Apparently it's simply a matter of emotion. Memory and emotion are tied closely together, so the more passionate you are when listening, the more it sticks in your head.
Levitin's tone is breezy and cheerful, and though the book isn't very well structured (the chapters have a shaggy dog story feel to them), it's an enjoyable read. The book is more of a biography of the brain generally than about music and the brain, so it's fascinating to read even if you're not that interested in music per se. There's also the de rigeur nod to evolutionary psychology and the evolutionary underpinnings of music (apparently Stephen Pinker thinks music is a useless evolutionary byproduct; Levitin provides numerous plausible reasons why expertise in music would be a good demonstration of fitness - a dismaying thought when you think about people like Keith Richards).
All up, well worth a look.
* AKA Mr Fucking Renaissance Man