Mais de Sofia Orthodox Ensemble
- Bulgarian National Choir "Svetoslav Obretenov" & Georgi Robev
- Die Regensburger Domspatzen & Roland Büchner
- Sofia Philharmonic Orchestra, Alexander Panteleev, Bulgarian National Choir, Antoaneta Besparova, Georgi Robev, Pavina Ivanova, Bozhidar Mitroushev, Roumyana Bobeva, Peter Yanukov, Ognyan Vassilev, Valentina Hristova, Ivan Moutafchiev, Stefan Vassilev, Maria Stoicheva, Nicolina Pankova, Lilyana Ovcharova, Vassil Marchev, Roumyana Tsacheva, Lyobmir Mihailov, Magdalena Hajossyova, Rundfunk-Sinfonieorchester Berlin, Dietrich Knothe, Dimitur Yanakiev, Yulia Barumova, Karl-Heinz Schmieder, Ekkehard Wagner, Gisela Fetting, Astrid Pilzecker, Marcus Creed, RIAS Chamber Chorus, Werner Hollweg, Walton Grönroos, Celina Lindsley & Gabriele Schreckenbach
- Jorg-Peter Weigle, Leipzig Radio Chorus, male section, Martin Flämig, Dresden Kreuzchor, Friedrich Krell, Wernigerode Radio Youth Choir, Dietrich Knothe, Bernd Casper, Astrid Pilzecker, Berlin Radio Chorus (male section), Roland Büchner, Regensburg Cathedral Choir, Gerhard Erber, Peter Habermann, Carl Maria von Weber Men's Choir, Berlin, Marcus Creed, Rundfunk-Sinfonieorchester Berlin, RIAS Chamber Chorus, Gerhard Meyer, Dieter Fokel, Michael Schoppe, Wolfgang Stah, Ekkehard Wagner, Kurt Wöss, Bratislava Philharmonic Chorus, Leipzig Thomaner Choir, Hans-Joachim Rotzsch, Berlin Radio Choir, members, West German Radio Chorus, Helmut Froschauer, West German Radio Symphony Orchestra, Dorothe Jansen & Andreas Wiedermann
- Bulgarian National Choir
- Odessa Seminary Choir & Priest Mikhailo Davydov.
- Gabriele Ferro, Cologne Radio Chorus, Cappella Coloniensis, Martyn Hill, Paolo Barbacini & Marilyn Schmiege