| Verfasser | Häufigkeit |
| Olmo Castillo, Isidro |
13 |
| Otero, Juan-Bautista 1964- |
13 |
| Porpora, Nicola 1686-1768 |
11 |
| Metastasio, Pietro 1698-1782 |
5 |
| Conforto, Nicola 1718-1793 |
2 |
| Giuvo, Nicola 1680-1748 |
2 |
| Adams, Robin |
1 |
| Adriana, Díaz del Castillo H |
1 |
| Ak, Behiç |
1 |
| Alekan, Henri 1909-2001 |
1 |
| Alves Bucheroni, Nevoral |
1 |
| Aly, Götz 1947- |
1 |
| Andersen, Hilke |
1 |
| Androide, Gibran |
1 |
| André, Marcel 1885-1974 |
1 |
| Antonio, Benitez-Rojo |
1 |
| Antón, Beatriz Ferrús |
1 |
| Arcadio, Diaz-Quiiiones |
1 |
| Auclair, Michel 1922-1988 |
1 |
| Auric, Georges 1899-1983 |
1 |