two-years-ago, gregg allman told me it started when he and his brother duane brought together the musicout two loves of music. he, sort of, leaned toward the country blues, which is un- electrified, like robert johnson, elmore james. and i was really into bobby bland, james brown, you know people like curtis mayfield. >> brown: the sound they created with two lead guitarists and two drummers made rock and roll history. anthony decurtis is a contribution editor at "rolling stone" magazine. >> they had this amazing kind of twin guitar attack, you know, dickey betts and duane allman relly defined a beautiful harmonic sound that was simultaneously tough but really lyrical and they were based in the blues, but this was a hardcore rock and roll band that just came tearing out the south and kind of took over. >> brown: duane allman, acknowledged as one of rock's all-time greats guitarists, died in 1971, exactly 43-years-ago today in a motorcycle accident in macon, georgia. it was just as the band was starting to gain some commercial success. >> at first i screamed and ideal, shook my fist at t