Every album by The Beatles added a new layer to their sound, but Paul McCartney affirms that 'Sgt. Pepper' "freed" them from the expectations of their music.

The band's final recordings took place in August 1969 for 'The End' which featured on the album 'Abbey Road'. A month later, John informed his fellow members that he was leaving the band, asking for a 'divorce' from The Beatles.

All that changed when the band made Sgt. Pepper's Lonely Hearts Club Band. Find out why the creation of that album was so freeing, below.

Paul McCartney plays the opening song from the Beatles' first album on the Got Back Tour. Surprisingly, one of the Beatles ' most iconic songs is not often played by Paul McCartney on his Got Back Tour.

"When we came, it was quite shortly after Kennedy being assassinated," Paul McCartney says in the trailer, released Thursday. "Maybe America needed something like The Beatles to be lifted out of sorrow.

Ringo Starr and Paul McCartney recall US Beatlemania in documentary trailer - Beatles ’64 will feature never-before-seen footage of the band as well as capturing the camaraderie of the Fab Four.