Roberta Flack (b. 1937) is an American singer, songwriter, and musician who is notable for jazz, soul, R&B, and folk music.
In 1998, she appeared on a special episode of The Rosie O'Donnell Show taped from the set of Sesame Street. She led Elmo, Rosie O'Donnell, Whoopi Goldberg and the cast of Sesame Street in a medley of songs that included the "Sesame Street Theme", "Rubber Duckie", and "The People in Your Neighborhood".