A new film follows Paul McCartney's 2nd act after The Beatles' breakup

There have been plenty of Beatles-related documentaries in the past decade or so, and yes, I've reviewed most of them. But in my defense, The Beatles are a great subject, musically and biographically — and the best filmmakers are drawn to them.

Peter Jackson gave us the Get Back documentary miniseries and the latest installment of The Beatles Anthology. Ron Howard directed Eight Days a Week, about the group's touring years. Martin Scorsese directed Living in the Material World, his two-part biography of George Harrison. All of them were terrific — and all of them were made by Oscar-winning directors.

Documentary filmmaker Morgan Neville, who won an Oscar for his film about backup singers, 20 Feet From Stardom, has joined that club. He's already directed outstanding biographies of everyone from Johnny Cash and Anthony Bourdain to Steve Martin and Fred Rogers. And now, Prime Video is premiering his latest documentary, Man on the Run, about former Beatle Paul McCartney.

The word "former" is key here: While brief, artful montages encapsulate the frenzy and impact of Beatlemania, Man on the Run is focused on the decade immediately afterward — the 1970s. Specifically, it spans the period from when McCartney left The Beatles to when his former bandmate, John Lennon, was shot and killed.

Neville conducted many lengthy new interviews with McCartney but uses only the sound. Virtually all the footage in Man on the Run is vintage, so there are no white-haired rock stars in sight. But because McCartney is an executive producer and has provided a stunning amount of previously unseen private footage, there's lots of fresh stuff to see here.

The danger of McCartney having such input, though, is of Man on the Run becoming too sanitized as a personal biography. But it's not. The decade covered includes McCartney announcing the breakup of The Beatles, his very public musical feud with Lennon, the formation of McCartney's post-Beatles band Wings, even the "Paul is dead" rumor.

And in these new interviews, McCartney seems to be speaking honestly — not only about what happened, but how he felt about it all. On The Beatles breakup, for example, it was McCartney who announced it publicly — but it was Lennon who already had left the group. McCartney's reaction, at age 27, was to retreat with his family to a remote property he owned in Scotland — in a vintage interview, Linda McCartney recalls her husband's out-of-the-blue suggestion.

Man on the Run relies on other voices and perspectives to defend some of McCartney's infamous actions during this period. Lennon's son Sean, for example, excuses McCartney's stunned, understated reaction to John's death — when asked by reporters, he called it "a real drag" — as having been in shock.

And Lennon himself, in an interview filmed years after The Beatles' breakup, admits that McCartney was right in hating and suing the manager, Allen Klein, whom John had brought in to handle the group. At the time, Lennon and McCartney even attacked one another in song — and in a new interview, McCartney is very open about how much that stung.

That same refreshing honesty extends to other key moments — the formation of his group Wings and recruiting Linda as its first charter member, his jail time in Japan for bringing pot into that country, even the time Lorne Michaels, on Saturday Night Live, jokingly offered The Beatles a ridiculously small check if they would reunite on his show.

Man on the Run is more about the man than it is about his creative process. But his music runs all through the documentary, and it all adds up to an impressive, inspirational second act.