is the sixth opera by Richard Wagner
, and his last conventional opera.
Antwerpen in the 10th Century. The young duke Gottfried of Brabant has disappeared and his regent, Count Telramund, accuses Gottfried's sister, Elsa, of having murdered him. A mystery knight appears in a boat drawn by a swan and offers to fight for Elsa on the condition that she never ask him what his name is or where he comes from. He defeats Telramund and he and Elsa gets married, but on their wedding night she cannot stop herself from asking the forbidden question.
Tropes appearing in this opera: