In which Mick Houghton, the author of a book about the legendary folk-rock label Elektra, and Adam White, the man behind a huge tome about the history of Motown, talk to David Hepworth about the unique challenges faced by independent labels, the charismatic men who founded them, the occasionally difficult stars they had to deal with and what keeps both Jac Holzman and Berry Gordy going at an age when most people are happy just to look at their great-grandchildren.
