At Fillmore East June 27, the Fillmore East closed, and the band were invited to play a final, invitation-only concert, along with Edgar Winter, the Beach Boys and Country Joe McDonald. The Beach Boys initially refused to perform unless they headlined the event, but Graham refused, telling them that the Allman Brothers would be closing the show, and they were free to leave if they disagreed. The Allman Brothers' performance was used for additional tracks when an expanded version of "At Fillmore East", "The Fillmore Concerts", was reissued on CD. "At Fillmore East" showcases the band's eclectic mixture of blues, rock, country, and
At Fillmore East comparisons with jazz saxophonist John Coltrane (especially Duane's solo-ending pull-offs, a direct nod to the musician). The performance begins with a "long, laconic intro" by Betts employing volume swells, reminiscent of the "dreamy trumpet" used to open songs on Miles Davis' "Kind of Blue" (1959). "Whipping Post" (opening in 11/4 time, unusual territory for a rock band) by this point had become one of the longest jams in the band's set; the original album version runs five minutes, while the "At Fillmore East" version exceeds 23. Aside from the opening bassline and lyrics, the two versions are completely unalike. Again,