According to the British Board of Film Classification, the rockumentary Becoming Led Zeppelin contains “brief moderate violence” and “drug references”. How can this be? A glance at John Bonham’s index entry in the book Hammer of the Gods — “heroin use”,

Becoming Led Zeppelin captures the hard rock ’70s band in their gestation period. Before the dark mystique; the stories of legendary

The new documentary Becoming Led Zeppelin charts the origins and early days of the influential rock & roll band through new interviews with surviving members Robert Plant, Jimmy Page, and John Paul Jones,