| Verfasser | Häufigkeit |
| Oldman, Gary 1958- |
23 |
| Oldman, Gary |
12 |
| Oppitz, Gerhard 1953- |
9 |
| Osby, Greg 1960- |
9 |
| Der Bayerische Rundfunk Symphonieorchester |
8 |
| Livingston, Margaret |
8 |
| O'Brien, George |
8 |
| Orlandini, Gino |
8 |
| Tebaldi, Renata 1922-2004 |
8 |
| Oddone, Graciela ca. 20./21. Jh |
7 |
| Onesti, Giorgio 1919- |
7 |
| Orloff, Gene |
7 |
| Rosher, Charles |
7 |
| Fortunato, Ron |
6 |
| Orwell, George |
6 |
| Ottenthal, Gertrud 1958- |
6 |
| Puccini, Giacomo 1858-1924 |
6 |
| Verdi, Giuseppe 1813-1901 |
6 |
| Brahms, Johannes 1833-1897 |
5 |
| Corena, Fernando 1916-1984 |
5 |