Do you know why Johann Sebastian Bach was considered light-fingered? Or what you could do with a lock of Mozart's hair if you had it? These questions could lead you to an ancient mystery: Why do humans enjoy producing musical notes, as Darwin put it? Is this ability literally in our DNA, and if so, what is it doing there? The authors sailed dangerously close to the Sirens' Rock and joined Orpheus in meeting the sinister creatures of the underworld. They traced the path of sound waves from their source to the listener's brain and analyzed the genealogy of the Bach family and the song of...