Dusky-voiced, elegantly beautiful leading lady of stage, screen and TV who frequently played doomed chanteuses or tragic mulattos. McKee made a highly praised film debut as the drug-addicted lead singer of a Supremes-like pop group in "Sparkle" (1976). She first appeared on Broadway as Rachel (Mrs. Jackie) Robinson in the short-lived musical "The First" (1981) and won a Tony nomination for her portrayal of Julie in the 1983 Houston Grand Opera revival of "Show Boat" (she was reportedly the first black actress to play that role in a major American production).