The Heathertones vocal quartet took form in 1946 with members Nancy Swain Overton, her sister Jean Swain, Bix Brent and Pauli Skindlov.
In 1946 she and her sister, Nancy Swain Overton, founded a vocal quartet The Heathertones with Bix Brent and Pauli Skindlov (later replaced by Marianne McCormick).
After The Heathertones broke up, Jean pursued a career in documentary film production with Robert Drew where she was involved with filming of Yehudi Menuhin, Duke Ellington and the opening of the Metropolitan Opera at Lincoln Center.