Complex sentence: Dissatisfied with life in Hollywood, Muni chose not to renew his contract, and returned to the screen only occasionally for such roles as Frédéric Chopin's teacher in "A Song to Remember" (1945).
Split into simpler sentences: Dissatisfied with life in Hollywood, Muni chose not to renew his contract. He returned to the screen only occasionally for such roles as Frédéric Chopin's teacher in "A Song to Remember" (1945).