Claude Devos

Александр Алябьев

Gina Bachauer

Coro Del Teatro Alla Scala

Richard Blareau

Chor Der St. Hedwigs-Kathedrale Berlin

Richard Lewis

Chor der Bayreuther Festspiele

Léon Jessel

André Balbon

Heinz Maria Lins

Jesse Crawford

Jean Antonietti

Ferdinand Grossmann

Alois Melichar

Ebe Stignani

Serge Lamont

Edouard Lindenberg

Stanisław Moniuszko

Shura Cherkassky

The Metropolitan Opera House Orchestra

Gustav Koslik

Ignacy Jan Paderewski

Honthy Hanna

Marina Hotine