Music is all around us, all the time -- as we shop in a store, eat in a restaurant -- or work off those calories in a spin class. In this episode of Musonomics, Prof. Larry Miller from the NYU Music Business Program explores the evolution and licensing issues of background and foreground music used in businesses, from the birth of Muzak in the wartime factory -- and then we shift into overdrive with Soul Cycle's rawk gawd Sean Linehan on how he sculpts the playlists for each of his sold out spin classes.