"A Day in the Life" is the last song of the album "Sgt. Pepper's Lonely Hearts Club Band" released by the British rock band The Beatles in 1967. The songwriter is Lennon-McCartney. The song is composed of two distinct parts, which were completed separately by John Lennon and Paul McCartney, with orchestral performance. Lennon was inspired by a newspaper article at the time, while McCartney was a reminiscence of his youth. It was not until the other songs on the album were recorded that the band decided to connect the two parts with piano portamento and add continuous piano chords at the end of the song.

This song was sung by John Lennon and Paul McCartney. At first it was written by John, but I couldn’t write half of it, so Paul could add in. Paul was writing another song at the time, so John asked him to add that song in. , So there is A Day in the life.

This song is very clever, the beginning part is John sings, then there is a transition of music, there is also a big noise from low to strong gradually, after the alarm, Paul's part is naturally added in, and then John after the transition The orchestral music is the transitional part in the first section, which has no special meaning. It's just because The Beatles likes to innovate and uses various instruments in the song. In addition, the album has a great influence. This album has completely changed the way of rock music creation.