René Soames

Lina Bruna Rasa

Torsten Ralf

Orchestra Sinfonica Di Roma Della RAI

Boris Christoff

Helen Traubel

Orchestre National De France

Béla Bartók

Herta Glaz

Afro Poli

George Singer

Ilse Hollweg

Sir Thomas Beecham

Wiener Symphoniker

Boston Symphony Orchestra

Wolfgang Amadeus Mozart

James Robertson

Eleanor Steber

Lorenz Fehenberger

Serge Koussevitzky

Dimitri Mitropoulos

Josef Krips

Philharmonia Orchestra

Giuseppe Verdi

Jeanette MacDonald