German operatic choir.
It belongs to the Staatsoper unter den Linden ([l295449]), the Berlin opera, which was formerly in the GDR-part of Berlin. During the time of the GDR, the choir was also called Chor Der Deutschen Staatsoper Berlin.

The similarly named Deutsche Oper Berlin is located in the Western part of Berlin and also has a choir, which can be found at: Chor der Deutschen Oper Berlin.