The Opera Orchestra Of New York

George Pieterson

Bernard Sinclair

Het Volendams Opera Koor

Prague Smetana Theatre Orchestra

Göteborgs Symfoniker

Ivan Rebroff

Gaspar Sanz

Giorgio Ricci

Joseph Jongen

Nadia Dobriyanova

Alain Meunier

Benedetto Marcello

New Philharmonia Chorus

Bruno Leonardo Gelber

Irmgard Seefried

RIAS Sinfonietta

Marita Napier

Jean-François Heisser

Edith Thallaug

National Arts Centre Orchestra

Gioconda De Vito

Eliahu Inbal

DuBose Heyward

Isador Goodman