Rock 'N' Roll Exposed: The Photography of Bob Gruen 2013 Synopsis - From Led Zeppelin to The Rolling Stones, Elvis to Madonna, John Lennon to Johnny Rotten, Bob Gruen has captured half a century of music through the eye of a lens. In this landmark documentary series, award-winning filmmaker Don Letts reveals the stories behind some of the most famous rock 'n' roll photographs of all time.