orologio en CB01 OFFICIAL. The Bayreuth Festival Opera House mounted this production of Richard Wagner's 1865 opera Tristan und Isolde as part of the Bayreuther Festspiele. Staged by Heiner Müller, it stars Siegfried Jerusalem, Waltraud Meier, Poul Elming and Uta Priew, and features musical accompaniment by The Orchestra and Chorus of the Bayreuther Festspiele.