Die Walküre is the second of the four music dramas that constitute Richard Wagner's Der Ring des Nibelungen (English: The Ring of the Nibelung). It was performed, as a single opera, at the National Theatre Munich on June 26, 1870, and received its first performance as part of the Ring cycle at the Bayreuth Festspielhaus on August 14, 1876.

As the Ring cycle was conceived by Wagner in reverse order of performance, Die Walküre was the penultimate of the four texts to be written, although Wagner composed the music in performance-sequence. The text was completed by July 1852, and the music by March 1856.

Wagner largely followed the principles related to the form of musical drama which he had set out in his 1851 essay Opera and Drama under which the music would interpret the text emotionally, reflecting the feelings and moods behind the work, using a system of recurring leitmotifs to represent people, ideas and situations rather than the conventional operatic units of arias, ensembles, and choruses. Wagner showed flexibility in the application of these principles here, particularly in Act III when the Valkyries engage in frequent ensemble singing.

As with Das Rheingold, Wagner wished to defer any performance of the new work until it could be shown in the context of the completed cycle, but the 1870 Munich premiere was arranged at the insistence of his patron, King Ludwig II of Bavaria. More than the other Ring dramas, Die Walküre has achieved some popularity as a stand-alone work and continues to be performed independently from its role in the tetralogy.

The story of Die Walküre is based on the Norse mythology told in the Volsunga Saga and the Poetic Edda. In this version the Volsung twins Sieglinde and Siegmund, separated in childhood, meet and fall in love. This union angers the gods who demand that Siegmund must die. Sieglinde and the couple's unborn child are saved by the defiant actions of Wotan's daughter, the title character, Valkyrie Brünnhilde, who as a result faces the gods' retribution.
Cast:
Siegmund - Jon Vickers
Sieglinde - Gre Brouwenstijn
Hunding - David Ward
Wotan - George London
Brunnhilde - Birgit Nilsson
Fricka - Rita Gorr
...and a whole gaggle of noisy Valkyrie!
London Symphony Orchestra
Sir Erich Leinsdorf - conductor
DECCA - 1961