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 of Elizabeth Reed." When first commercially released, it was issued as a double LP with just seven songs across four vinyl sides. "At Fillmore East" was the band's artistic and commercial breakthrough, and has been considered by some critics to be one of the greatest live albums in rock music. It has also been ranked among the best overall albums by artists and continues to be a top seller in the band's catalog, becoming their first album to go platinum. In 2004, the album was selected for preservation in the Library of Congress, deemed to be "culturally, historically, or aesthetically