How Lennon and McCartney Wrote “She Loves You”

The opening lines follow speech inflections and stay within the compass of their chords—obviously Lennon’s work. What changes them, making a straightforward sequence surprising, is McCartney’s harmony. Already maturing, the partnership’s writing formula can be heard here as the dual expression of Lennon’s downbeat cynicism and McCartney’s get-up-and-go optimism.