By the end of the 1960s, cracks were definitely beginning to show in the fabric of the Fab Four.
The Beatles would eventually split in 1970, after years of incessant arguing and creative disagreements. However, John Lennon once traced the beginning of the end to years before this.
Lennon felt the band's days were numbered from August 27, 1967, when Brian Epstein died. Epstein was the band's manager, and the man who discovered the Beatles down a dusty alleyway in Liverpool.