Dec 31, 1971 - The Beatles broke up.  John Lennon, Paul McCartney, George Harrison, and Ringo Starr ceased to know as the Beatles and became individually known as former Beatles.  McCartney filed suit for the dissolution of the Beatles' contractual partnership on 31 December 1970, one year prior.  Be a winner with the Classic Rewards Club when you enter the keyword Beatles.  Good luck and thanks for listening.