Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
The Gypsy Princess by Kálmán, Erb 26 Ġun 2013, Minn (2013/2013), Immexxi minn Ricarda Regina Ludigkeit,, Surmast Direttur Philipp Armbruster, Opernhaus Dortmund, Dortmund, Germany