Composers
| Composer name | Year of Birth | Death | Compositions in database |
|---|---|---|---|
| Janáček, Bedřich | 1920 | 33 | |
| Janáková, Adriana | 1979 | 6 | |
| Janárčeková, Viera | 5 | ||
| Janda, Petr | 1942 | 4 | |
| Janošík, Michal | 1972 | 14 | |
| Janovický, Karel | 1930 | 40 | |
| Janšta, Jakub | 3 | ||
| Jarábek, Josef | 1 | ||
| Jarolím, Martin | 1 | ||
| Javorek, Jiří | 1 | ||
| Jedlička, Václav | 1933 | 1 | |
| Jelínek, Miki | 1950 | 1 | |
| Jelínek, Stanislav | 1945 | 122 | |
| Ježil, Petr | 7 | ||
| Ježková, Olga | 1956 | 51 | |
| Jíra, Milan | 1935 | 48 | |
| Jiráčková, Marta | 1932 | 32 | |
| Jirásek, Jan | 1955 | 36 | |
| Jirásek, Ondřej | 1964 | 5 | |
| Jírková, Olga | 1926 | 4 |