Judith Hellwig

Christian Ferras

Suzanne Danco

Hans Knappertsbusch

Oscar Levant

Reinhold Glière

Ferde Grofé

The Metropolitan Opera House Orchestra

Ilse Hollweg

Orchestre National De La R.T.F.

Winterthur Symphony Orchestra

Raoul Jobin

Franz Litschauer

Orchestra Sinfonica Di Roma Della RAI

Camerata Academica Salzburg

Jean Pougnet

André Kostelanetz

Robert Heger

The Salzburg Festival Orchestra

Walter Piston

Paul Creston

Rudolf Schock

Amparo Iturbi

Albert Wolff

Pro Musica Orchestra Stuttgart