The “14 Hour Technicolor Dream” be-in which took place at Alexandra Plaza Palace in London was the English art and music community’s answer to the San Francisco acid tests. It was intended to raise money for counter culture newspaper the International Times which was facing an obscenity trial but it ended up being a financial bust.

No one seems to be absolutely clear as to every musician that played the event. There were dozens invited but not all showed. Among the ones that did were The Soft Machine, Arthur Brown, Yoko Ono, The Flies, The Move, The Pretty Things, Pete Townshend, The Deviants and Pink Floyd. Jimi Hendrix and John Lennon were in the audience.

What Is Happening? made for British TV show “Man Alive” focuses on the audience, dancers, performance artists, gawkers and the event in general. While it’s not a concert film it still has the energy of rock and roll.