The final Beatles recording featuring John, Paul, George and Ringo is here. Released Thursday and titled “Now and Then,” the song comes from a batch of unreleased demos written by the late John Lennon in the ’70s. Paul McCartney, George Harrison, and Ringo Starr used the tape to construct the songs “Free As a Bird” and “Real Love,” released in the mid-1990s. But there were technical limitations to finishing “Now and Then.” That changed in 2022, 21 years after Harrison's death, when Starr and McCartney were able to utilize the same artificial intelligence restoration methods used during the making of “The Beatles: Get Back" to complete “Now and Then.”