The Beatles’ Now and Then, created using AI and an original 1970s lo-fi demo, won Best Rock Performance at the Grammys; McCartney and Starr completed it in 2021 (Jess Weatherbed/The Verge)

Jess Weatherbed / The Verge:
The Beatles’ Now and Then, created using AI and an original 1970s lo-fi demo, won Best Rock Performance at the Grammys; McCartney and Starr completed it in 2021  —  The “Now and Then” track was released in 2023 after machine learning was used to clean up an old John Lennon demo.