Hans Dieter Höltge

Varsity Singers

René Clemencic

Ugrin Gábor

Herbert Handt

საქართველოს ცეკვისა და სიმღერის სახელმწიფო ანსამბლი

Otto Joachim

Bo Ohlgren

Mindener Kinderchor

Schubertbund Siegburg

Chamber Choir of Europe

Das Mannheimer Bachorchester

Gertrude Pitzinger

Back To The Bible Youth Choir

The Russian State Symphony Cappella

Wanda Polańska

Christian Endeavour Convention Choir

Herbert Kegel

Chór Męski Przy Kościele św. Jakuba W Warszawie

The Leningrad Glinka State Academic Choir

Studentenkantorei Freiburg

Coro Di Voci Bianche

Chorale de Saint Louis des Invalides Paris

Our Lady Of Mercy Glee Club

Jaroslav Vodrážka