Bachman reluctantly mentioned that he had this ninth song, but did not intend to use it on a record. He said, "We have this one song, but it's a joke. I'm laughing at the end. I sang it on the first take. It's sharp, it's flat, I'm stuttering to do this thing for my brother." Fach asked to hear it, and they played the recording for him. Fach smiled and said "That's the track. It's got a brightness to it. It kind of floats a foot higher than the other songs when you listen to it." Bachman agreed to rearrange the album sequence so the song could be added, but only if he could re-record the vocals first, without the stutter. Fach agreed, but Bachman says "I tried to sing it normal, but I sounded like Frank Sinatra. It didn't fit." Fach said to leave it as it was, with the stutter. Reception Billboard described "You Ain't Seen Nothing Yet" as a "basic rocker featuring licks reminiscent of the Velvet Underground's 'Sweet Jane'," and praised the melodies and the vocal hook. Cash Box said that "this simply super rocker with a perfect hook is a rock experience that is not to be missed" and that it is "one of the best rockers of the year". While not originally intended to be a single, "You Ain't Seen Nothing Yet" was becoming a hit as an album cut. Radio stations all over the USA were giving it a great deal of airplay, as Not Fragile (1974) was soaring up the album charts—so much so that Bachman was embarrassed because he thought it was a stupid song, just something that he wrote as a joke. With no singles yet released from the Not Fragile album, Fach would regularly call Bachman with airplay reports, asking for permission to release "You Ain't Seen Nothing Yet". Bachman said, "And I refused for three weeks. I was producer, so I had final say on what went out. I woke up one day and asked myself, 'Why am I stopping this?' Some of my favorite records are really dumb things like 'Louie, Louie'...so I said to Charlie, 'O.K., release it. I bet it does nothing.'" "You Ain't Seen Nothing Yet" debuted at number 65 on September 21, 1974, and reached the top of the Hot 100 seven weeks later. It was the only US number 1 single in