In the spring of 1970, Cobb, who had already moved to Atlanta, worked as a session guitarist at Doraville’s Studio One, where he played in a session band with members of Classics IV and The Candymen.
Two years later, Cobb, along with three former members of the Candymen – Rodney Justo, Dean Daughtry and Robert Nix – birthed ARS with Justo on vocals, Daughtry on keyboards, Nix on drums, Cobb on guitar, Barry Bailey on guitar and Paul Goddard on bass.
In February 2017, Cobb told Vintage Guitar magazine that seeing the Beatles perform on "The Ed Sullivan Show" shaped his musical future.
“We dropped most of the instrumentals and started to discover R&B and traditional blues,” he said. “Nobody played much country music, and standards weren’t cool anymore.”
Cobb, who lived near Monticello, left ARS in 1986. In 1993, he was inducted into the Georgia Music Hall of Fame.