Complex sentence: In addition to having acted in many films, McDaniel was a professional singer-songwriter, comedian, stage actress, radio performer, and television star; she was the first black woman to sing on the radio in America.
Split into simpler sentences: In addition to having acted in many films, McDaniel was a professional singer-songwriter, comedian, stage actress, radio performer, and television star. Hattie McDaniel was in fact the first black woman to sing on the radio in America.