Wagner: Die Walküre
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.