Watching the Vienna Philharmonic, Georg Solti, and a stellar cast record Wagner's immense Götterdämmerung for Decca in the fall of 1964 provides a thousand lessons in the art of working under pressure. For this classic documentary, The Golden Ring, a BBC camera crew eavesdropped as producer John Culshaw guided his engineering team through tricky technical maneuvers far removed from the relative ease of modern digital editing. What utter concentration and focus Birgit Nilsson, Wolfgang Windgassen, Gottlob Frick, and Dietrich Fischer-Dieskau b...