John Whitworth

Raymond Leppard

Monique Frasca-Colombier

Mimi Coertse

Rosl Schwaiger

Günter Attinger

Bruno Weissenfels

Jacques Villisech

Wilhelm Neumann

Joseph Silverstein

Werner Hansen

Pittsburgh Symphony Orchestra

Susann McDonald

Heinz Hörtzsch

The Corelli Tri-Centenary String Orchestra

London Harpsichord Ensemble

London Oriana Choir

Wilfried Jochims

Maria Jung

Laura Zanini

Ettel Sussman

Edmond Appia

Quatuor Loewenguth

Ferenc Szekeres

Helmut Winschermann