The first concert of the 1971 Chamber Music Workshop will be presented in Cabell Hall Auditorium on Sunday, May 2, at 3:30 p.m. Rony Rogoff, a violinist who has appeared in Europe and Israel, cellist Fred Sherry who plays contemporary music in New York, and Dennis Davies, pianist and conductor of the Norwalk, Connecticut Symphony will perform. The concert is open to the public and free of charge.