The album was digitally remastered to high quality perfection. The cast is a dream come true - Birgit Nilsson as the Empress Turandot, Franco Corelli as Prince Calaf, a young Renata Scotto as Liu and in the minor role of Pong is Piero De Palma. At this time, all the singers in the principal roles were in excellent shape and enjoying immense success as opera gods of their day. Franco Corelli is considered one of the 20th century's finest tenors, right up there with Enrico Caruso, Placido Domingo and Luciano Pavoratti. Corelli had an incredibly dynamic tenor voice, which was used for acting with consummate skill in all of his roles. He was usually paired with Renata Tebaldi and together they performed in the greatest of Italian operas. Corelli as Calaf is the definition of the role. He is romantic, intense, passionate, fighting with all his might against the cold and powerful Turandot, finally conquering her with his love. always enjoyed Placido Domingo in the role, and he is to be found in a top-notch production at the Metropolitan Opera with set design by Franco Zefferelli, in which Eva Marton sings Turandot. That is visually the best stage production of Turandot.