| Verfasser | Häufigkeit |
| Liebau, Eva |
10 |
| Liebau, Frank |
9 |
| Liebau, Karl F. 1938- |
6 |
| Liebau, Eckart 1949- |
5 |
| Liebau, Friedrich |
5 |
| Chor der Oper Zürich |
3 |
| Liebau, Friedrich Wilhelm 1802-1843 |
3 |
| Orchester der Oper Zürich |
3 |
| Bartoli, Cecilia 1966- |
2 |
| Bermúdez, Gabriel |
2 |
| Bormann, Hans-Friedrich ca. 20. Jh |
2 |
| Buratto, Eleonora 1982- |
2 |
| Chappuis, Marie-Claude 1969- |
2 |
| Chausson, Carlos 1950- |
2 |
| Chung, Myung-Whun 1953- |
2 |
| Dakić, Danica 1962- |
2 |
| Dickel, Hans 1956- |
2 |
| Fischer, Ádám 1949- |
2 |
| Fritsch, Regina 1964- |
2 |
| Giannone, Pietro |
2 |