He was music director of the Toronto Symphony Orchestra from 1965 to 1969 and of the San Francisco Symphony from 1970 to 1977. In 1972, he led the San Francisco Symphony in its first commercial recordings in a decade, recording music inspired by William Shakespeare's "Romeo and Juliet". In 1973, he took the San Francisco orchestra on a European tour, which included a Paris concert that was broadcast via satellite in stereo to San Francisco station KKHI. He was involved in a 1974 dispute with the San Francisco Symphony's players' committee that denied tenure to the timpanist Elayne Jones and the bassoonist Ryohei Nakagawa, two young musicians Ozawa had selected. He returned to San Francisco as a guest conductor, including a 1978 concert featuring music from Tchaikovsky's ballet "Swan Lake".