John Lennon and Paul McCartney were each other’s favorite audience. That was plainly clear as the besotted Beatles bantered, bickered and obsessed over the 23 years they were friends and rivals.

When The Beatles broke up, Ringo Starr was John Lennon’s only worry heading into the 1970s. "I’m pleased that everyone is doing well," the 'Mother' writer said.

George Harrison was not a fan of one of The Beatles most beloved albums, but he knew it was popular for a reason.