Part III: Rare and unknown voices - JACQUES JANSEN
Part III: Rare and unknown voices - JÓZSEF SIMÁNDY
Part III: Rare and unknown voices - ALAIN VANZO
Part III: Rare and unknown voices - ALFONS FÜGEL
Part III: Rare and unknown voices - MARIO SERENI
Part III: Rare and unknown voices - LEV SIBIRYAKOV
Part III: Rare and unknown voices - BORIS GMYRYA
Part III: Rare and unknown voices - BIDU SAYAO
Part III: Rare and unknown voices - BORIS SHTOKOLOV
Part III: Rare and unknown voices - MARIA BARRIENTOS
Part III: Rare and unknown voices - ANITA CERQUETTI
Part III: Rare and unknown voices - HERTHA TÖPPER
Part III: Rare and unknown voices - MATTIWILDA DOBBS
Part III: Rare and unknown voices - TANCREDI PASERO
Part III: Rare and unknown voices - HENRI LEGAY
Part III: Rare and unknown voices - JOSEF METTERNICH
Part III: Rare and unknown voices - FRANZ FEHRINGER
Part III: Rare and unknown voices - WALBURGA WEGNER
Part III: Rare and unknown voices - MARIE DIETRICH
Part III: Rare and unknown voices - LINA BRUNA RASA