Rock

The holidays have never felt more ambivalent — a feeling captured by Phoebe Bridgers' "Christmas Song"; The Bird and the Bee's "You and I at Christmas Time"; and Nick Lowe's "Winter Wonderland."

Photographer Bob Gruen spent decades capturing the lives and performances of rock stars of the '60s, '70s and '80s, including John Lennon, the Rolling Stones, Chuck Berry, Tina Turner — and many more. Gruen put in many hours backstage, in studios and on the road, sometimes doing drugs and drinking until dawn with his subjects.