- Erik Westberg Vocal Ensemble & Erik Westberg
- USSR Ministry of Culture Chamber Choir & Valery Polyansky
- Irina Arkhipova, Valeri Polyansky & The USSR Ministry of Culture Chamber Choir
- Sofia Boy's Choir, Nikolai Stanchev, Mihail Milkov, Miglena Spassova, Ivan Ivanovich Petrov, Sofia Orthodox Ensemble, Miroslav Popsavov, Moscow Rybin Choir, Vladimir Makarov, Dimiter Dimitrov, Yoan Kukuzel-Angeloglassniyat Ensemble, Georgi Robev, Bulgarian National Choir & Vassilka Naidenova
- PaTRAM Institute Male Choir & Vladimir Gorbik
- Men's Choir of the Valaam Singing Culture Institute, Igor Ushakov, V. Miller, V. Starodubtsev, A. Ushakova & A. Gorbatenko