At Fillmore East jazz. "Fusion is a term that came later, but if you wanted to look at a fusion album, it would be "Fillmore East". Here was a rock 'n' roll band playing blues in the jazz vernacular. And they tore the place up," said Dowd. Announcer Michael Ahern opens "At Fillmore East" with a simple introduction: "Okay, the Allman Brothers Band." Duane Allman biographer Randy Poe describes it as "the only low-key moment over the course of the [show]." The cover of Blind Willie McTell's "Statesboro Blues" which opens the set showcases Duane Allman's slide guitar work in open E tuning.
The Fillmore subsequently used at the Fillmore East and Fillmore West venues. In the mid-1960s, the Fillmore Auditorium became the focal point for psychedelic music and the counterculture in general, with such acts as The Grateful Dead, The Steve Miller Band, Jefferson Airplane, Quicksilver Messenger Service, Moby Grape, The Doors, Jimi Hendrix Experience, The Byrds, Big Brother and the Holding Company, Santana, Frank Zappa's The Mothers of Invention, and British acts The Who, Cream, and Pink Floyd all performing at the venue. Besides rock, Graham also featured non-rock acts such as Lenny Bruce, Miles Davis, Rahsaan Roland Kirk, Charles Lloyd, Aretha Franklin,