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.
Hampton Grease Band cult following, and was re-released on CD in 1996 with several minutes of additional material that had been edited off the vinyl release. The band was the lead-off band for Frank Zappa/Mothers last appearance at the Fillmore East on June 6, 1971. It was at this concert that Zappa and the Mothers recorded part of the "Live at the Fillmore East" album. Later that evening they were joined by John Lennon and Yoko Ono, also available in recorded versions. Lead guitarist Harold Kelling died in May, 2005. The Hampton Grease Band held their first reunion concert on June 2, 2006,