Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
The Valkyrie by Wagner, Richard, Sib 24 Mar 2007, Minn (2007/2007), Immexxi minn Francesca Zambello,, Surmast Direttur Heinz Fricke, John F. Kennedy Center for the Performing Arts, Washington D.C., United States