Ljubomir Bodourov, Stefka Mineva, Lidia Gocheva, Alberto Rinaldi, Sofia National Opera Chorus, Rouslan Raichev, Stoil Georgiev, Anna Tomowa-Sintow, Sofia National Opera Orchestra, Nicolai Stoilov, Angel Petkov & Giacomo Aragall
Alberto Albertini, Alfredo Mariotti, Gian Giacomo Guelfi, Antonio Zerbini, Coro di Torino della RAI, Arturo Basile, Orchestra Sinfonica, Gigliola Frazzoni, Vittorio Pandano & Ferruccio Tagliavini
Jussi Björling, Nils Grevillius, The Royal Orchestra, Stockholm Concert Association Orchestra, Anna-Lisa Bjorling, Swedish Radio Orchestra, Robert Merrill, Renato Cellini, The RCA Victor Orchestra & Emil Markov