Composers
| Composer name | Year of Birth | Death | Compositions in database |
|---|---|---|---|
| Janáček, Bedřich | 1920 | 33 | |
| Janáková, Adriana | 1979 | 6 | |
| Janárčeková, Viera | 5 | ||
| Janda, Antonín | 1891 | 1961 | 1 |
| Janda, Petr | 1942 | 4 | |
| Janeček, Karel | 1903 | 1974 | 42 |
| Janošík, Michal | 1972 | 13 | |
| Janovický, Karel | 1930 | 40 | |
| Janšta, Jakub | 3 | ||
| Jarábek, Josef | 1 | ||
| Jaroch, Jiří | 1920 | 1986 | 15 |
| Jarolím, Martin | 1 | ||
| Javorek, Jiří | 1 | ||
| Jedlička, Antonín | 1914 | 1993 | 1 |
| Jedlička, Václav | 1933 | 1 | |
| Jelínek, Miki | 1950 | 1 | |
| Jelínek, Stanislav | 1945 | 122 | |
| Jeremiáš, Otakar | 1892 | 1962 | 20 |
| Jeřábek, Pavel | 1948 | 2001 | 29 |
| Ježek, Jaroslav | 1906 | 1942 | 32 |