The Beatles won a Grammy on Sunday night, nearly 55 years after the famed band broke up, thanks to a little help from artificial intelligence.The band's song, Now and Then, released in November 2023, made history for being the first AI-assisted track to take home a Grammy. The song, which won Best Rock Performance, beat out Pearl Jam, St. Vincent, the Black Keys and Idles."Now and Then" was also nominated for Record of the Year but lost to Kendrick Lamar's "Not Like Us."The song features a previously unreleased recording of the late John Lennon singing and playing piano. Lennon's wife, Yoko Ono, shared the recording with the rest of the Beatles after his death.Using advanced machine-learning software, engineers were able to isolate Lennon's voice from the piano track. Over the years, Paul McCartney, Ringo Starr and the late George Harrison worked on the song, eventually adding their parts to create a new song featuring all four band members.Ahead of the song's release, McCartney tweeted: "... Nothing has been artificially or synthetically created. It's all real and we all play on it. We cleaned up some existing recordings a process which has gone on for years."Although AI was used in the production, it fits within the Grammy guidelines, which state that "only human creators are eligible" and that work featuring "elements of AI material" is allowed in certain categories.The win comes at a time when the music industry grapples with defining the appropriate use of AI and how it may impact creativity and authenticity in music production. The recognition also highlights how a song with AI assistance can drive innovation and creative expression while honoring the legacy of artists. AI is increasingly being used in the music industry, though not everyone supports it.A 12-minute short film about Now and Then follows McCartney, Starr and Harrison in 1994 as they reunite to work on the track. But after Harrison's death in 2001, the song was largely untouched until 2022.Lennon's son, Sean, said in the film that he was moved by the process that made his father's voice part of a new Beatles song."My dad would have loved that, because he was never shy to experiment with recording technology," Sean said. "I think it's really beautiful."