- Roy Theaker, Bulgarian National Radio Symphony Orchestra, Georgi Dimitrov
- Roumen Kroumov, Maria Palieva, Tania Kazandjieva-Chauche, Yossif Radionov, Kalina Krusteva, Angel Stankov, Gheorghi Stoyanov, Stoyan Pavlov, Christo Pavlov, Alexandra Docheva, Mila Pavlova, Nadja Dimitrov, Rossen Idealov, Kostadin Yotsov, Ludmil Nentchev
