0
Waltraud Meier
German soprano and mezzo-soprano
1
Gabriele Schnaut
German singer
2
Roberta Knie
singer
3
Carmen Reppel
German soprano
4
Nadine Secunde
American opera soprano
5
Jeannine Altmeyer
singer
6
Norma Sharp
American soprano, Professor of voice
7
Isoldé Elchlepp
German singer and opera singer
8
Ute Trekel-Burckhardt
German singer and opera singer
9
Theo Adam
German bass-baritone opera singer
10
Josephine Veasey
singer
11
Éva Marton
opera singer
12
Reiner Goldberg
German opera singer
