Formed in 1966 with a goal of performing at the World's Fair in Montreal in 1967 (Expo '67), the Men of the Deeps is North America's only coal miners' chorus. Over the span of fifty years, the choir has performed all across North America, in China and in Europe. As the choir's musical director for more than forty years, John C. (Jack) O'Donnell marks the travels and performances of a half-century in the spotlight.