Wired: Music Makes Your Brain Happy.
The magazine briefly interviews Daniel J. Levitin, who writes about the "science behind the obsession" in his book, This is Your Brain on Music. He distinguishes between the brain and the mind, suggests that talent is in large part made, and that music may signal a certain "fitness" for coupling.
On the last point Wired quickly gets to the implications of Levitin's music science.
Women really do dig musicians.