The Beatles Method

What made the Beatles unique was not any single innovation but their relentless creative evolution. They moved from simple love songs to psychedelic experimentation to avant-garde sound collage in just seven years — a pace of artistic growth unprecedented in popular music.

Much of that growth came from creative tension. Lennon and McCartney pushed and competed with each other, and neither would have reached the same heights alone — their rivalry drove both to exceed what either could do by himself.