Cathy O’Neil practiced law at a high level while also entertaining her colleagues in the bar with energy, talent and grace.

O’Neil, the guiding spirit for the Atlanta Bar Association’s long-running, all-lawyer, musical comedy revue, “A Courthouse Line,” and a partner in the special matters and investigations practice at King & Spalding, died on Oct. 1 after a yearlong battle with pancreatic cancer. She was 53.