In parallel with his early excursions in experimental theatre, Glass worked in winter 1965 and spring 1966 as a music director and composer on a film score ("Chappaqua", Conrad Rooks, 1966) with Ravi Shankar and Alla Rakha, which added another important influence on Glass's musical thinking. His distinctive style arose from his work with Shankar and Rakha and their perception of rhythm in Indian music as being entirely additive. He renounced all his compositions in a moderately modern style resembling Milhaud's, Aaron Copland's, and Samuel Barber's, and began writing pieces based on repetitive structures of Indian music and a sense of time influenced by Samuel Beckett: a piece for two actresses and chamber ensemble, a work for chamber ensemble and his first numbered string quartet (No. 1, 1966).