“My goose was cooked in the record business,” singer-songwriter Joe South declared in 1994, shaking his head at the disastrous trajectory his career had taken during the 1970s, “Nobody even knew me anymore. I was gone from the scene. I felt like a nobody”. Like so many musicians of his generation, South, who was born in Atlanta in 1940 as Joseph Souter, was derailed at his creative peak by drug addiction. His struggles were on full display for t…