In a monumental event marking 60 years since the onset of Beatlemania, The Beatles released their final new song, 'Now and Then,' on Thursday. This groundbreaking release, made possible through the magic of AI and archival recordings, features the voices of all four original Beatles performers. Paul McCartney and Ringo Starr, the surviving members, breathed life into an old demo recording by John Lennon, completing a musical legacy that spans decades.