Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
The Bird Seller by Zeller, Sib 18 Set 2010, Minn (2010/2010), Immexxi minn Beate Vollack, Natascha Ursuliak,, Surmast Direttur Basil H. E. Coleman, Fürstbischöflichen Opernhaus, Passau, Germany