Yvette Marie Stevens (born March 23, 1953), better known by her stage name Chaka Khan, is an American musician, singer and songwriter. Her career has spanned nearly five decades, beginning in the 1970s as the lead vocalist of the funk band Rufus. 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 Grammy Awards and has sold an estimated 70 million records worldwide.