Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
The Twilight of the Gods by Wagner, Richard, Erb 29 Mej 2013, Minn (2013/2013), Immexxi minn Plamen Kartalov,, Surmast Direttur Erich Wächter, Velizar Genchev, Sofia Opera, Sofia, Bulgaria