In 1967 Siepi was Don Giovanni in a controversially received production staged by Otto Schenk and designed by Luciano Damiani that showed Mozart's masterpiece in the light of the commedia dell'arte, emphasizing the comic and ironic elements of this opera (conductor Josef Krips strongly opposed this production's concept).
Available on DVD:
Der Ring des Nibelungen, with James Levine conducting the Metropolitan Opera Orchestra, in the "classical-manner" production by Otto Schenk, from 1989 to 1990.
Acclaimed stage directors she has collaborated with include Jean-Pierre Ponnelle, Günther Rennert, Otto Schenk and Giorgio Strehler.
The stage adaptation of You Gotta Have Balls, titled Chuzpe in German, starring Otto Schenk, opened at the Kammerspiele theatre in Vienna in November 2012.
The orchestra was conducted by Wolfgang Rennert, and the production was directed by Otto Schenk
Otto von Bismarck | Otto | Otto III | Otto Piene | Otto I, Holy Roman Emperor | Otto I | Otto Preminger | Otto II | Otto Dix | Otto Natzler | Otto II, Holy Roman Emperor | Otto Binder | Ard Schenk | Otto Skorzeny | Otto Schenk | Otto of Brunswick | Otto Kerner, Jr. | Otto Steinbrinck | Otto Kerner | Otto IV, Holy Roman Emperor | Otto IV | Otto III, Holy Roman Emperor | Otto Braun | Miranda Otto | Frei Otto | Otto-Werner Mueller | Otto Schmidt | Otto Muehl | Otto Lilienthal | Otto Klemperer |