McCartney deserves special points for prescience. The Beatles at Twickenham Studios, as seen in “Get Back” Ethan A. (Ringo Starr isn’t heard from nearly as much, amid all the brainstorms and thunderstorms.) You could see it as a little bit like a band version of “Scenes From a Marriage,” albeit with three partners moving from bickering to banter to bliss, as George Harrison is very much a key third partner in these exchanges. “Yeah, well, I’ll be wearing my skirt on the show anyway,” jokes McCartney in response (during a time when they thought they were moving toward a TV special, not a feature film). “It’s like you and me are lovers,” Lennon says at one point, tellingly, talking about their harmonies as things start to really click, but perhaps unwittingly speaking their deeper connection. Certainly there are interchanges in the book that a playwright would throw out, but it’s remarkable how much of “Get Back reads like it could be adaptable into an off-Broadway play, full of dark comedy and rich insight about what can and can’t emerge out of ego and compromise among longtime partners approaching a crossroads. But “Get Back” will prove to be thoroughly absorbing for most Beatles followers, since it does loosely tell a story - not to mention the fact that John Lennon and Paul McCartney are just damned funny fellows, left to their own jocular devices as unwitting dialogue writers. The idea of reading straight transcriptions of in-studio banter - well-interspersed with the photography of Ethan Russell and Linda McCartney - sounds like a chore, if not outright bore.

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