In the seventies, casts of this caliber were almost taken for granted. Today, amid a drought of true Wagnerian voices, this performance stands out as both a priceless historical document and a masterclass in Wagner interpretation. Even late in her career, Birgit Nilsson remains unmatched as Brünnhilde, singing with unshakable authority and sincere emotion. Leonie Rysanek and Richard Cassilly ignite the first act with their searing portrayals of Sieglinde and Siegmund. Theo Adam delivers a Wotan brimming with charm, rage, and a poignant sense of paternal love, embodying the full complexity of Wagner's conflicted god. The recording is in excellent stereo sound.