Ubu Rex is a satirical opera by Krzysztof Penderecki, on a libretto in German by the composer and Jerzy Jarocki, based on Alfred Jarry's 1896 play Ubu Roi. It uses models by Offenbach, Rossini, Shostakovich and Schnittke. The opera was premiered by the Bavarian State Opera on 8 July 1991 for the opening of the Munich Opera Festival, conducted by Michael Boder. The Polish premiere was 1993 in Grand Theatre, Łódź, conducted by and directed by Lech Majewski.