Psychedelic Britannia (2015)

Narrated by Nigel Planer with contributions and freshly shot performances from artists who lived and breathed the psych revolution - Paul McCartney, Ginger Baker, Robert Wyatt, Roy Wood, The Zombies, Mike Heron, Vashti Bunyan, Joe Boyd, Gary Brooker, Arthur Brown, Kenney Jones, Barry Miles, The Pretty Things and The Moody Blues

Unfortunately the movie Psychedelic Britannia is not yet available on HBO Max.