Irène Jaumillot

Kieth Engen

Franz Crass

Ludovic Spiess

Coro Della "Società Italiana Dell' Opera"

Lovro Von Matacic

Carl Wesley

Giulietta Simionato

Rafael Martínez Valls

Elisabeth Schwarzkopf

Hélia T'Hézan

Otto Nicolai

Françoise Louvay

Tullio Serafin

Claude Calès

Jenny Williams

Nils Grevillius Orkester

Boston Symphony Orchestra

Leo Spies

Giuseppe Verdi

Jose Serrano

Giacomo Aragall

Marcel Cordes

Sadler's Wells Orchestra

The Longines Symphonette