This Is Your Brain on Music: The Science of a Human Obsession by Daniel J. Levitin
(Plume/Penguin, 2007) Have you ever wondered why the music you loved as a teenager is still your favorite? Or what the heck is an ear-worm and how do I get rid of it? Answering these and many more fundamental questions about how music actually works, this book is required reading at many of the most prestigious universities in the world. Go buy it. Like now.