0
Klaus Mertens
German singer
1
Rotraud Hansmann
Austrian soprano in opera and concert
2
Andreas Schmidt
German bassbaritone
3
Helen Donath
American soprano
4
Franz Crass
German opera singer
5
Berthold Possemeyer
German baritone in concerts and opera, voice teacher at University of Music and Performing Arts, Frankfurt am Main
6
René Jacobs
Belgian (Flemish) countertenor and conductor
7
Barbara Scherler
German mezzo-soprano and contralto
8
Dietrich Fischer-Dieskau
German lyric baritone and conductor
9
Diego Fasolis
Swiss conductor and organist
10
Christa Ludwig
German mezzo-soprano
11
Theo Adam
German bass-baritone opera singer
12
Ursula Zollenkopf
German contralto
13
Lena Lootens
Dutch singer
14
Núria Rial
Operatic soprano
15
Mechthild Georg
German opera singer and voice professor
16
Peter Schreier
German tenor and conductor
17
Gerlinde Sämann
German soprano
18
Anne Sofie von Otter
Swedish mezzo-soprano
19
Nikolaus Harnoncourt
Austrian conductor
