20th Century performers such as Nicolai Ghiaurov, Nicola Ghiuselev, and Ghena Dimitrova began their careers within the structure of the National Opera, as did later singers such as Irena Petkova.
Irena Sendler | Irena Grafenauer | The Courageous Heart of Irena Sendler | Irena Petkova | Irena Litvinovič | Irena Karpa |