The Beatles are one of the most popular and critically acclaimed bands in pop-music history.
The famous line-up of John Lennon, Paul McCartney, George Harrison and Ringo Starr was first formed in Liverpool, England in 1962.
By the time the time The Beatles' final studio album, 'Let It Be,' was released in 1970, the band had changed the face of music as well as society and continue to be the best-selling band of all time.
