JAZZ

Imprisoned Czechoslovakian arts activist Karel Srp, the chairman of the banned Jazz Section of the Musicians Union, said in a smuggled letter made public Monday that the international community must press the Czechoslovak government to fulfill the commitments it made as a signatory to the 1975 Helsinki Accords on Human Rights, Security and Economic Cooperation. “The case of the Jazz Section has grown beyond the framework of a cultural organization. It is a matter of the interests and the rights of everyone,” Srp’s letter said. Srp and six other leaders of the Jazz Section--founded in 1971 to promote jazz but expanded to include publication of nonconformist authors denied other means of expression in Czechoslovakia--are scheduled to go on trial in Prague today on charges of operating an unlawful enterprise and distributing illegal publications.