In 1956 , she worked with the orchestras of Christo Vuchkov and Dimitar Ganev for Big Orchestra Concert Directorate conductors , which were Boris Simeonov and Emil Georgiev .
In 1956 , she worked with the orchestras of Christo Vuchkov and Dimitar Ganev for Big Orchestra Concert Directorate conductors of which were Boris Simeonov and Emil Georgiev .