Chaka Khan is an American recording artist. Her career has spanned five decades, beginning in the 1970s as the lead vocalist of the funk band Rufus. Khan received public attention for her vocals and image. Known as the Queen of Funk, Khan was the first R&B artist to have a crossover hit featuring a rapper, with "I Feel for You" in 1984. Khan has won ten Grammys and has sold an estimated 70 million records worldwide.