Paul McCartney and John Lennon had a knack for finishing each other's songs. They collaborated by lending ideas for verses, choruses and middle eights many times over the course of their partnership. 1967’s “A Day in the Life” is one of the most prominent examples of McCartney and Lennon’s collaboration. What started as a Lennon song, once worked on with McCartney, became a truly collaborative piece—and a standout in The Beatles’ catalog.

“McCartney: A Life in Lyrics” is a co-production between iHeart Media, MPL and Pushkin Industries.

The series was produced by Pejk Malinovski and Sara McCrea; written by Sara McCrea; edited by Dan O’Donnell and Sophie Crane; mastered by Jason Gambrell with assistance from Jake Gorski and sound design by Pejk Malinovski. The series is executive produced by Leital Molad, Justin Richmond, Lee Eastman, Scott Rodger and Paul McCartney.

Thanks to Lee Eastman, Richard Ewbank, Scott Rodger, Aoife Corbett and Steve Ithell.