found: Old Czech folk songs. [SR] p1974 (a.e.)labels (Jaroslav Krček)
found: Ceremuga, J. Symphony no. 3 [SR] c1978 (a.e.)label (Jaroslav Krček) container (b. 1930)
found: His Raab [SR] 1985?:container (Jaroslav Krček) program notes (b. 1939)
found: Czech Christmas carols [SR] p1978:label (Jaroslav Krček) container (I︠A︡roslav Krchek)
found: Christmas concerti, p1991:label (Jaroslav Kr(e)cek) booklet (b. 1939, southern Bohemia; conductor, composer)
found: Italian concerti grossi, p1994:label (Jaroslav Kr(e)chek)
found: Grove music online, February 26, 2015(Krček, Jaroslav; born April 22, 1939, Čtyři Dvory, nr. České Budějovice; Czech composer)
found: Musica Bohemica, Praha, WWW site, April 7, 2015(Jaroslav Krček; artistic director, conductor, and founder of Musica Bohemica; also a composer, plays a number of musical instruments, sings and makes new instruments for the ensemble) - http://www.musicabohemica.eu/en/
found: Wikipedia, April 7, 2015(Jaroslav Krček; born April 22, 1939, in Čtyři Dvory near České Budějovice in southern Bohemia; Czech radio producer, conductor, inventor of musical instruments and composer of classical and folk music; in 1975 he founded Musica Bohemica, a chamber ensemble, as an offshoot of the folklore group Chorea Bohemica)