1955 Participants as of semi finals
Bold+underscore = Prize Winner
Regular+underscore = finalist
SOPRANOS
| Guerra Margain Amparan (s – MEX)  |
Hermine Emmery Breedijk (s – NL) |
Géri Bruninx (s – BE) |
| Tatjana Bufall (s – STATELESS) |
Esther Erauw (s – BE) |
Marina Jensen (s – NL) |
| A. Fraterman (s – NL) |
Maria Mertens (s – BE) |
MEZZOS/ALTOS
| Diaan Berendrecht (NL) |
Meta Bourgonjen (NL) |
Eva Bornemann (a – GE)  |
| Lucille G. David (USA) |
Regina Dinis de Fonsesca (POR) |
Sonja Kurwin (NL) |
| H. J. M. Lasschuit (NL) |
Simone Linien (BE) |
TENORS
| Arjan Blanken (NL)  |
Johan van Haagen (NL)  |
Jacques Scheepers (NL) |
| Willem van der Sluys (NL)  |
BASSES/BARITONES
| Reinier Barends (NL) |
Jean Capiaux (bt – FR)  |
Albert van Haasteren (bb – NL)  |
| Bernard Paul Hofstede (NL) |
Gerd Spennemann (GE) |
Laurens van der Werf (NL) |
