0

Max Ciolek

German tenor and conductor

1

Klaus Mertens

German singer

2

David Cordier

British opera singer and singer

3

Johannette Zomer

Dutch classical singer

4

Werner Güra

German tenor

5

Helen Donath

American soprano

6

Maria Friesenhausen

German classical soprano singer

7

Hildegard Rütgers

German singer

8

Mechthild Georg

German opera singer and voice professor

9

Ursula Zollenkopf

German contralto

10

Marjanne Kweksilber

singer