30th January 1969: British rock group the Beatles performing their last live public concert on the rooftop of the Apple Organization building for director Michael Lindsey-Hogg's film documentary, 'Let It Be,' on Savile Row, London, England. Drummer Ringo Starr sits behind his kit. Singer/songwriters Paul McCartney and John Lennon perform at their microphones, and guitarist George Harrison (1943 - 2001) stands behind them. Lennon's wife Yoko Ono sits at right. (Photo by Express/Express/Getty Images)

It was Jan. 30, 1969, when the four gentleman of The Beatles gathered on the rooftop of the Apple Corps building in London. It had been three years since they had performed live together, and that frigid afternoon would be the last time they ever would.

In the next year, the band fell apart for a number of reasons -- the swift rise of the band's dark horse, George Harrison, divergent personal and professional interests and, obviously, clashing egos, to name a few.