Daniel Levitin, “who now runs the Laboratory for Musical Perception, Cognition and Expertise at McGill University in Montreal, has immersed himself in music about as deeply as is humanly possible. He began asking scientific questions about the nature of his beloved obsession — Where does creativity come from? What goes into making a song memorable? — in the late 1980s. He began asking his peers and role models in the music business and publishing those conversations in magazines such as Billboard and Mix.”