"Yesterday" is a melancholy ballad about the break-up of a relationship. The singer nostalgically laments for yesterday when he and his love were together, before she left because of something he said. McCartney is the only member of the Beatles to appear on the track. The final recording was so different from other works by the Beatles that the band members vetoed the release of the song as a single in the United Kingdom, although other artists were quick to record versions of it for single release. The Beatles recording was issued as a single there in 1976 and peaked at number 8.