It was a 1966 number one R&B hit for American recording artist Ray Charles.[4] The single was released shortly after Charles was released from rehab after a 16-year heroin addiction. Charles heard a 1965 recording of the song by Ronnie Milsap. According to Milsap, Charles liked his version of the song so much that he decided to record it himself. It is notable for being one of Ashford & Simpson's first successful compositions together; the duo also penned Charles' "I Don't Need No Doctor".[5]