Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
The Comedian Harmonists by Wittenbrink, Ħam 15 Diċ 2011, Minn (2011/2012), Immexxi minn Hajo Fouquet, Oliver Hennes,, Surmast Direttur Deborah Coombe, TNT Studio, Lüneburg, Germany