The Beatles are back! Or, at least, a belated song based on a never-released John Lennon cassette demo that has been created through the wizardry of digital technology and the input of the band’s surviving members.

The Beatles are back! Or, at least, a belated song based on a never-released John Lennon cassette demo that has been created through the wizardry of digital technology and the input of the band’s surviving members.