Referred to by the late Jerry Wexler as one of the men most responsible for the Southern Rock sound that came out of Macon, Georgia, in the '70s, Johnny Sandlin's music career began in the early '60s playing with other musicians who went on to leave their mark in music history including Dan Penn, David Briggs, Norbert Putnam, Jerry Carrigan, Roger Hawkins, David Hood, Eddie Hinton and fellow HourGlass band members, Paul Hornsby, Pete Carr and Gregg and Duane Allman. Sandlin also produced, mixed, and mastered albums for the Allman Brothers Band, Gregg Allman, Gregg and Cher, Richard Betts, Johnny Jenkins, Elvin Bishop, Wet Willie, Bonnie Bramlett, Alex Taylor, Cowboy, Delbert McClinton, Widespread Panic and many others.