American rock band
During the '70s, the Allman Brothers Band was the most influential rock group in America, thanks in no small part to At Fillmore East, a high-water mark for concert albums and one that redefined the scope of rock's musical boundaries. Duane Allman and Dickey Betts pioneered the twin-lead guitar, and the entire band placed an emphasis on musicianship, seamlessly melding rock,... Wikipedia