Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
Siegfried by Wagner, Richard, Sib 20 Apr 2013, Minn (2013/2013), Immexxi minn Robert Lepage, Neilson Vignola,, Surmast Direttur Fabio Luisi, Metropolitan Opera House, New York City, United States