Theo Zilliken

Boston Symphony Orchestra

Birgit Nilsson

Enrico Caruso

Richard Strauss

Orchestra Del Teatro Dell'Opera Di Roma

Josef Greindl

Mieczysław Mierzejewski

Andrzej Hiolski

Mario Lanza

Peter Roth-Ehrang

Arthur Fiedler

Dimitri Mitropoulos

Karl Paul

Peter Anders

Metropolitan Opera Chorus

Staatskapelle Dresden

Ruggiero Leoncavallo

Roberta Peters

The Philadelphia Orchestra

Pierino Gamba

Andor Foldes

Jaroslav Vogel

Anton Paulik

Fedora Barbieri