National Opera Orchestra

Helene Boschi

Gian Carlo Menotti

Ottorino Respighi

Simon Barere

Alexander Krannhals

Alessandro Scarlatti

Helmut Krebs

Eugène Bigot

Marga Höffgen

Борис Гмиря

Libero De Luca

Ernő Balogh

Orchestra Of The Metropolitan Opera Association Of New York

Leon Pommers

Emil Waldteufel

Rochester Philharmonic Orchestra

Frankenland State Symphony Orchestra

Elfride Trötschel

Norman Foster

William Primrose

Marian Anderson

Risë Stevens

Fritz Krenn

Engelbert Humperdinck