Roberta Flack (born February 10, 1937) is an American singer, songwriter, and musician who is notable for jazz, soul, R&B, and folk music. Flack is best known for her Hot 100 #1 singles "The First Time Ever I Saw Your Face", "Killing Me Softly with His Song", and "Feel Like Makin' Love", as well as "Where Is the Love" and "The Closer I Get to You", two of her many duets with Donny Hathaway.

http://en.wikipedia.org/wiki/Roberta_Flack
http://www.robertaflack.com/