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Produced by Sean Ono Lennon and mixed and re-engineered from the original multitrack tapes by Paul Hicks and Sam Gannon, the audio from the "One to One" concerts has simply never sounded better.

It continued the Beatles’ lifelong interest in cutting-edge studio technology, from multitrack recording and tape-loop experiments.

With eight-track recording coming into vogue during that era, Magic Alex vowed to provide the group with double the recording capacity — even if he didn’t quite understand what multitrack recording meant.

“I said, Hey, let’s forget about this multitrack stuff,” he recalled in the Minutemen documentary.

Overlapping screens may be the 21st-century equivalent of director Robert Altman’s overlapping dialogue, which itself was driven in part by advances in multitrack sound recording.