Manfred Jungwirth

Westminster Symphonic Choir

György Lehel

Enzo Mascherini

Residentie Orkest

Louis Auriacombe

Josef Hála

Tibor Varga

Udvardy Tibor

Angeles Gulin

Dolores Cava

Titta Ruffo

Prague Radio Symphony Orchestra

Eugenia Zukerman

Sonja Schöner

Bronislaw Huberman

Hans Haselböck

Margherita Carosio

Gé Korsten

Salvatore Accardo

Chorus Of The Metropolitan Opera Association Of New York

Bruno Prevedi

Elisabeth Roon

Justus Frantz

Gary Bertini