Paris: André Marchal
Organ
Zurich: Alfred Baum
Organ
Zurich: Hans Vollenweider
Organ
Zurich: Hans Andreae
Piano
Zurich: Jean Verd
Piano
Paris: Andrée Honegger-Vaurabourg
Counterpoint
Paris: Jean Langlais
Organ
Paris: Madeleine de Valmalète
Piano
Paris: Georges Robert
Organ