Great cast, though the young (33) Kieth Engen lacks some authority. Leonie Rysanek isn’t as steady as Elisabeth Grümmer in the next year’s broadcast but she, pre-Met and pre-vocal crisis, is very compelling. Astrid Varnay is at her zenith in one of her very greatest roles and so is the magical Sandor Konya, who can float and soar with the best of them. The Vorspiel starts at 6:43