Beatles documentary Get Back used custom AI to strip unwanted sound

The Beatles' rooftop performance from 1969 in Get Back Get Back, Peter Jackson's documentary about the making of the Beatles' album Let It Be and final public performance on the rooftop of their Savile Row office, would have been impossible without custom-made artificial intelligence, claim sound engineers who worked on the film. Sixty hours of film were recorded during the short period in 1969 but most of the audio was captured by a microphone that picked up the musicians' instruments in a noisy jumble rather than a carefully crafted mix.