Alfredo Simonetto

Francesco Macci

Lena Nordin

Guy Bovet

Norman Luboff Choir

Erwin Ortner

Princeton Chamber Orchestra

Torsten Nilsson

Georges Janzer

Harald Nerat

Maria Livia Sao Marcos

Friedrich Witt

Ursula Schirrmacher

Amsterdams Kamerorkest

Mozart-Ensemble Amsterdam

Frieder Lang

Olivier Charlier

Dr. Samuel J. Hoffman

Jon Villars

Elizabeth Futral

Christine Barbaux

Emilio Arrieta

Choeurs Du Festival D'Aix-En-Provence

Ture Rangström

Chór Teatru Wielkiego W Warszawie