Leon Björker

Orchestra Ladislav Štaidl

Josef Protschka

The Linden Singers

Pedro Gonez

Gerd Natschinski

Michael Collins And His Orchestra

London Philharmonic Orchestra

Rudolf Christ

The Ambrosian Singers

Martin Vantin

Renée Doria

Janet Perry

Jeannette Sinclair

Joan Sutherland

Francisco Asenjo Barbieri

Los Angeles Philharmonic Orchestra

Gise Mey

Willy Hofmann

Dorothea Chryst

Rudolf Bibl

Alois Aichhorn

James Levine

Tibor Szöke

Paul Abraham