The first ever collaboration between keyboardist Christine McVie and guitarist Lindsey Buckingham, this song is loosely based on a track titled "The World Keeps on Turning," written by Fleetwood Mac founding member Peter Green. That tune can be found on the band's first album, also titled Fleetwood Mac, which was released in 1968. Christine McVie recalled to Uncut:
"Lindsay had this lick and didn't know what to do with it. We knocked around some vocal ideas and it happened very quickly - about half an hour."