Germaine Léontine Angélique Lubin was a French dramatic soprano, best known for her association with the music of Richard Wagner. She possessed a brilliant voice but her later career was tainted with accusations of Nazi sympathies.

Sigurd is an opera in four acts and nine scenes by the French composer Ernest Reyer on a libretto by Camille du Locle and Alfred Blau. Like Wagner's Ring of the Nibelung, the story is based on the Nibelungenlied and the Eddas, with some crucial differences from the better known Wagnerian version. The whole opera can best be described as an epic with techniques of the grand opera.