For the first half of the 1970s, the Allman Brothers Band was the most influential rock group in America, redefining rock music and its boundaries. The band's mix of blues, country, jazz, and even classical influences, and their powerful, extended onstage jamming altered the standards of concert performance -- other groups were known for their onstage jamming, but when the Allman Brothers stretched a song out for 30 or 40 minutes, at their best they were exciting, never self-indulgent. They gave it all a distinctly Southern voice and, in the process, opened the way for a wave of '70s rock acts from south of the Mason-Dixon Line.

The group was founded in 1969 by Duane Allman (Nov. 20, 1946-Oct. 29, 1971) on guitar and Gregg Allman (b. Dec. 8, 1947) on vocals and organ; Forrest Richard ("Dickey") Betts (b. Dec. 12, 1943) on guitar; Berry Oakley (b. Apr. 4, 1948-d. Nov. 12, 1972) on bass; and Butch Trucks and Jaimoe Johanny Johanson (b. July 8, 1944) on drums. Duane and Gregg Allman loved soul and R&B, although they listened to their share of rock & roll, especially as it sounded coming out of England in the mid-'60s.