 Sir Paul McCartney told BBC Radio that AI has helped finish production of a final, final Beatles song. It may be from John Lennon's 1978 demo cassette of a song called Now and Then. He recorded it originally in his apartment. It was on cassette, but it had a persistent buzz. If anybody knows, it's the 60-cycle hum from the mains that apparently they had to get rid of. They used AI to isolate voices in the get-back documentary that Peter Jackson did. You can't separate out more than what's there unless you recreate the parts that are missing. So you train the model to say, you can hear this vocal, and this is what a vocal sounds like. Now make that without the backing track. That's something you couldn't do before, but the model can recreate just the little parts that flesh that out and get rid of everything else. It's a good kind of faking because you're just restoring the parts you couldn't hear otherwise, not creating something new.