Credited to Lennon–McCartney, it was written by John Lennon in either Paris or New York City,[2][3] and recorded in eight takes on 27 February 1964.

[6] Its basic structure of simple doo-wop chord changes and block harmonies over a walking bass line "creates an illusion of sincerity through its sheer attack".

In the chorus, John's lead vocal part sits higher than George's, and more unusual in this case, Paul's harmonies.

The song was part of the "studio performance" sequence, which was filmed at the Scala Theatre, London, on 31 March 1964.

That marks the only time the song was ever performed in front of a live audience, which consisted of 350 paid actors, one of whom was a thirteen-year old Phil Collins.