It's been more than 50 years since all four members of The Beatles released music, with their emotional classic 'The End'.

But despite just two members remaining - Sir Paul McCartney and Ringo Starr - the band is preparing for a comeback.  

McCartney has revealed that he is using artificial intelligence (AI) to 'extricate' John Lennon's voice from an old demo to create the 'final Beatles record.'