Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
Die Wahrheit einer Silvesternacht by Harneit, Sib 17 Apr 2021, Minn (2021/2021), Immexxi minn Mart van Berckel,, Surmast Direttur Johannes Harneit, Opera Stabile, Hamburg, Germany