Louis van Tulder

Senta Benesch

Elfride Trötschel

Orchestre De Chambre De Lausanne

Renate Noll

Eleanor Steber

Domenico Cimarosa

Hubert Barwahser

Max Rudolf

Catherine Rowe

Albert Coates

Ezio Pinza

Richard Crooks

Gladys Ripley

George Thalben-Ball

Knabenchor Der St. Hedwigs-Kathedrale Berlin

Louis Kentner

Paul Badura-Skoda

Ronald Smith

The First Piano Quartet

Georges Blanchard

Anton Heiller

Amsterdamer Toonkunst-Chor

Harold Gomberg

Johann Kaspar Simon