"I'm Not the One" first appeared in 1981 on Shake It Up. It was not a charting single at the time, but was nonetheless included on the band's 1985 Greatest Hits album. The song was remixed on the Greatest Hits album, emphasizing the drum track with added reverb. It was then released as a single in 1986, following "Tonight She Comes", also from the Greatest Hits album. "I'm Not the One" debuted on the BillboardTop 40 chart on March 8, 1986, and peaked at number 32. AllMusic reviewer Donald A. Guarisco described "I'm Not the One" as one of Shake It Up "strongest and most memorable tunes", commenting that its sound still sounded fresh upon its 1986 re-release, five years after its first appearance on Shake It Up. The song is played in a scene from the 1995 comedy filmBilly Madison, where the title character reads Valentine's Day cards in third grade. The song was sampled for the 2001 song "Thank You" by rapper Lil' Bow Wow. In 2005, the album, , was released on Not Lame Recordings, which included a cover of "I'm Not the One" by Gigolo Aunts.
Composition
The song's intro and choruses are in the key of B minor. The intro features two synthesizer parts layered on top of each other, one derived from Ric Ocasek's vocal melody, and the other a supporting counter-melody in a softer tone. The intro/chorus begins with a chord progression of B minor, F♯ minor, E minor, and A major, but is immediately followed with a reversal, F♯ minor to B minor, retaining the E minor to A major movement. After another "reversed" repeat, the E minor to A functions as a ii-V-I turnaround in the key's relative major of D. The official sheet music folio lists the chord progression as D, to D/C, to D/B, to D/B♭, and video exists of Ocasek performing the song, solo on acoustic guitar, according to this progression. However, other transcriptionists describe the chord progression as D to D/C, to G/B, or to Gm/B♭. Either way, the last chord of the verse is a G minor sixth chord, in transition to the chorus in B minor. Each verse is introduced with a guitar melody from Elliot Easton, who layers several clean-tone guitar parts over the synthesizer-dominated arrangement. There is also a horn-like synthesizer solo by Greg Hawkes, played over the chorus progression.