Rosenkavalier, Der, ROH zuhn kah vah LEER, dehr, is a comic opera in three acts by the German composer Richard Strauss (see Strauss, Richard). The German title means The Knight of the Rose. It refers to an old marriage tradition by which a young man (the knight of the rose) presents a silver rose to a bride on her wedding day on behalf of her husband-to-be. The libretto (text) for the opera was written in German by Hugo von Hofmannsthal. The opera received its first performance in Dresden, Germany, on Jan. 26, 1911.