It's extremely tough to capture Paul McCartney's entire life in 20 photos. We could easily present 50 amazing shots from any one year of his time in the Beatles, let alone the 43 years since the group broke up. But in honor of McCartney's 24th post-Beatles album, New — and our new cover story — we're kicking off our look back at his career with a shot of McCartney and his songwriting partner John Lennon circa 1964.