"In 1971, Memphis act Big Star laid down tracks for what became one of the greatest rock albums of all time, the aptly-titled "#1 Record." During the historic sessions, bassist Andy Hummel and co-founder Chris Bell shot the following footage."
Footage and music uploaded by conan1982
Note: The music, Big Star's "Thank You Friends", is from their "Third" album, also known as "Sister Lovers" recorded by Alex Chilton and friends in '74 (not to be released until 1978). A perhaps even greater album if you give it enough time.