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 Stephen Thomas Erlewine gave the album five out of five stars and stated, "[it] remains the pinnacle of the Allmans and Southern rock at its most elastic, bluesy, and jazzy". Mark Kemp of "Rolling Stone" gave it five stars in a 2002 review and commented that "these shows [...] remain the finest live rock performance ever committed to vinyl", and the album "captures America's best blues-rock band at its peak". "At Fillmore East" was one of 50 recordings chosen in 2004 by the Library of Congress to be added to the National Recording Registry. "Rolling Stone" included at number 49