All My Loving

"All My Loving" is a song by The Beatles, written by Paul McCartney (credited to Lennon/McCartney), from the 1963 album "With the Beatles".
Writing.
According to journalist Bill Harry, McCartney wrote the lyrics while shaving, but McCartney told biographer Barry Miles that he wrote them while on a tour bus. He also said, "It was the first song I'd ever written the words first. I never wrote words first, it was always some kind of accompaniment. I've hardly ever done it since either." The lyrics follow the "letter song" model as used on "P.S. I Love You", the B-side of their first single.
Lennon showed his love for the song in his 1980 "Playboy" interview: