The break-up of the Beatles was a cumulative process throughout the period 1968 to 1970, marked by rumours of a split and ambiguous comments by the Beatles themselves regarding the future of the group. Although in September 1969 John Lennon privately informed the other Beatles that he was leaving the group, there was no public acknowledgement of the break-up until Paul McCartney announced on 10 April 1970 he was leaving the Beatles.
There were numerous causes for the Beatles' break-up. It was not a single event but rather a long transition, including the cessation of touring in 1966, and the death of their manager, Brian Epstein, in 1967. Conflict arose from differences in artistic vision. Both George Harrison and Ringo Starr temporarily left the group at various points during 1968–69 and all four band members had begun working on solo projects by 1970 as they all realised the likelihood the band would not regroup. Ultimately, animosity made it impossible for the group to continue working together in the years following.
In the years after the break-up there were sporadic collaborative recording efforts among the band members, but never with all four Beatles simultaneously collaborating as a recording or performing group again. After Lennon's death in 1980, the trio reunited for the Anthology project in 1994, using two unfinished Lennon demos – "Free as a Bird" and "Real Love" – for what would be new songs recorded and released as the Beatles.