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The Allman Brothers Band, formed by Duane Allman and his brother Gregg, was a pioneering Southern rock band that emerged in the late 1960s. Their distinctive sound, influenced by blues, jazz, and country, featured Duane's soaring guitar solos and Gregg's soulful vocals. The band's iconic album, "At Fillmore East," showcased their extended improvisations and became a defining moment in rock history.