On the first run-through, 16-year-old Box Tops frontman Alex Chilton sang this soon-to-be Number One hit "really softly," he later recalled. "The producer came out and said, 'No, man, you gotta sing it hard. Don't be afraid of the microphone.'" Producer Dan Penn then demonstrated, belting out the song, and Chilton followed suit, nailing it. Penn remembers the session differently: "Everybody thinks I coaxed Alex into doing a lot of vocal tricks, but it's not true — he just had it. The only thing I ever told that young man to do was sing 'aeroplane' instead of 'airplane.' I was just tryin' to make it flow better."