"You Ain't Seen Nothing Yet" was written by Randy Bachman. In "The Rolling Stone Record Guide", writer Dave Marsh called the song "a direct steal from The Who", but "an imaginative one." The chords of the chorus riff are very similar to the ones used by The Who in their song "Baba O'Riley", and also, the stuttering vocal is reminiscent of "My Generation". Randy insists that the song was performed as a joke for his brother, Gary, who had a stutter, with no intention of sounding like "My Generation". They only intended to record it once with the stutter and send the only recording to Gary.