This is Your Brain on Music (Daniel Levitin)

I already know a fair amount about music and about the brain, so some of this book was old hat, but I still learned a lot about the intersection between the two. For instance, I never appreciated the importance of the cerebellum in timing and rhythm. I also never realized that even non-musicians can generally sing a very familiar song from memory and get the key, the tempo, and even the singer's vocal mannerisms right. Music is a very complex and meaningful set of promises, and I enjoyed learning more about it.