Composers
| Composer name | Year of Birth | Death | Compositions in database |
|---|---|---|---|
| Janovický, Karel | 1930 | 40 | |
| Jírková, Olga | 1926 | 4 | |
| Jirko, Ivan | 1926 | 1978 | 53 |
| Jirmal, Jiří, Novák | 1925 | 2019 | 2 |
| Juchelka, Miroslav | 1922 | 2001 | 48 |
| Jaroch, Jiří | 1920 | 1986 | 15 |
| Jirásek, Ivo | 1920 | 2004 | 66 |
| Jiráček, Václav | 1920 | 1967 | 1 |
| Janáček, Bedřich | 1920 | 33 | |
| Jonák, Zdeněk | 1917 | 1995 | 35 |
| Jiřím, J. | 1917 | 1 | |
| Jedlička, Antonín | 1914 | 1993 | 1 |
| Jurovský, Šimon | 1912 | 1 | |
| Jindra, Alfons | 1908 | 1978 | 3 |
| Ježek, Jaroslav | 1906 | 1942 | 32 |
| Janeček, Karel | 1903 | 1974 | 42 |
| Jeremiáš, Otakar | 1892 | 1962 | 20 |
| Jirák, Karel Boleslav | 1891 | 1972 | 83 |
| Janda, Antonín | 1891 | 1961 | 1 |
| Jindřich, Jindřich | 1876 | 1967 | 3 |