| Verfasser | Häufigkeit |
| Alexander, Thomas J. L. |
5 |
| Muirhead, Michael R. |
5 |
| Aalto-Theater Opernchor |
1 |
| Beermann, Frank 1965- |
1 |
| Busvine, James R. |
1 |
| Carr, John |
1 |
| Devrient, Eduard 1801-1877 |
1 |
| Eagleman, Joe R. 1936- |
1 |
| Hargreaves-Cormany, Holly |
1 |
| Harvey, John 1911-1997 |
1 |
| Hoffer, Tia A. |
1 |
| Marschner, Heinrich 1795-1861 |
1 |
| Meloy, J. Reid 1949- |
1 |
| Muirhead, Jessica |
1 |
| Muirhead, John H. 1855-1940 |
1 |
| Muirhead, L. Russell 1896-1976 |
1 |
| Muirhead, Robb J. |
1 |
| Muirhead, Robb John |
1 |
| Muirhead, Robb John 1946- |
1 |
| Muirhead, Vincent U. 1919-2019 |
1 |