Konrad Wallenrod is a Polish-language opera by Władysław Żeleński to a libretto by Zygmunt Sarnecki (1837-1922) and Władysław Noskowski (1841-1881) based on the epic poem Konrad Wallenrod (1828) by Adam Mickiewicz.
The premiere was 1885 in Lviv, which was not prepared technically to create a grand opera on this scale.
[1] Notably at the premiere the elaborate harp part was played on the piano by Paderewski.
Konrad Wallenrod was not performed in Warsaw till the 1930s.
The plot follows closely the poem Konrad Wallenrod with Wallenrod and his wife Aldona sacrificing themselves in the final act and the triumph of the Teutonic knights.