It shows that I wrote sentimental love ballads way back when", Lennon stated in his 1980 Playboy interview.

"[4] Lennon and McCartney shared a single microphone "for their Everly Brothers-like close harmonies".

[5] Like much of the Beatles' early work, the song was released in two different mixes for mono and stereo.

Lennon's opening vocal is single-tracked in mono but double-tracked in the stereo mix.

The group typically performed the song faster than the studio version, and Lennon and McCartney often sang it with barely suppressed laughter.