When I was a kid I took 'The Brady Bunch' and 'The Partridge Family' very seriously. It was a world to me in the same way that the Greek myths would have been had I read them. You know Marcia is Athena and Mr. Brady is Zeus.
The music industry is a strange combination of having real and intangible assets: pop bands are brand names in themselves and at a given stage in their careers their name alone can practically gaurantee hit records.