| Verfasser | Häufigkeit |
| Leonardi, Nicoletta |
3 |
| Amato, Nicola 1958- |
2 |
| Ballo Charmet, Marina 1952- |
2 |
| Leonardi, Paul M. 1979- |
2 |
| Leonardi, Sergio |
2 |
| Neeley, Tsedal |
2 |
| Anastas, Tom |
1 |
| Ariostini, Armando 1951- |
1 |
| Asher, Nadine 1947- |
1 |
| Attili, Antonella 1963- |
1 |
| Barlozzetti, Guido |
1 |
| Bernhard-Leonardi, Alf |
1 |
| Bolliger, Luis |
1 |
| Bruttini, Alessandro |
1 |
| Capone, Pietro |
1 |
| Carman, Christopher J. 1969- |
1 |
| Cascio, Salvatore |
1 |
| Castle, Marjorie |
1 |
| Chase, Bill 1934-1974 |
1 |
| Chor der Oper Zürich |
1 |