“Yesterday” was one of the most recorded songs of the 20th century. It was also a Paul McCartney solo effort released under the Beatles name.
In the studio producer George Martin suggested the McCartney record the song with just an acoustic guitar backed by a string quartet. It may not have been typical rock and roll but it became one of the most recognizable songs in music history.
“Yesterday” reached the top of the American Singles Chart on October 9, 1965, and there is remained for four weeks.