"Half a century of Southern rock made by ramblin' men ... The Allman Brothers Band coalesced into a tight, resourceful sextet - rounded out by Duane's kid brother Gregg Allman on vocals, Dickey Betts on guitar, and Butch Trucks as a second drummer - they wrote songs out of necessity but jammed with determination. Their first two studio albums flopped primarily because they focused more on the former and less on the latter. What made them legends was 1971's double live At Fillmore East, which fit a mere seven tracks on four sides and remains one of the most electrifying concert albums ever released".