The Allman Brothers were a blues rock band that existed in various iterations until the death of Greg Allman. Their performance of One Way Out in New York City's Fillmore East in 1971 might be one of the finest blues rock performances of all time. The band was in its prime, with Duane Allman on slide guitar trading links with Dicky Betts, and Greg Allman's vocals still amaze me all these years later.