- Sofia Orthodox Choir & Miroslav Popsavov
- Cappella Romana & Alexander Lingas
- Bulgarian National Choir, Nicolai Dzichkovskii, Georgi Robev, Boncho Chakov, Stefan Markov, Sofia Orthodox Ensemble, Miroslav Popsavov, Nicolai Vordanov, Evgenija Borisova, Ivo Venkov & Nikolina Pankova
- USSR Ministry of Culture Chamber Choir & Valery Polyansky
- Moscow Rybin Choir, Vladimir Makarov & Vladimir Surgenko
- Igor Ushakov & Men's Choir of the Valaam Singing Culture Institute