NEW YORK, NY.- The brand-extension musical is a tough genre to game, demanding something new for newcomers yet fidelity for fans. (“Hairspray” succeeded; “Frozen” did not.) “Back to the Future: The Musical,” based on the first of the time-travel films in the billion-dollar franchise, faces an additional hurdle: It hinges on a star performance that would seem to be irreproducible onstage.

And by star, I of course mean the car.

So, good news: In the Broadway adaptation, which opened Thursday at the Winter Garden Theater, the famously souped-up DeLorean DMC, or a life-size replica thereof, is terrific — in some ways more exciting than the one in the movies because it does its tricks live.

Well, partly live. The time-warping, plutonium-powered joy rides that shuttle young Marty McFly (Casey Likes) between 1985 and 1955 in the vehicle retrofitted by eccentric Doc Brown (Roger Bart) are crafty illusions combining mechanical action, busy projections and a lot of distraction with fog, lights and sound.

Alas, that also describes the rest of the show, directed by John Rando with Doc-like frenzy: mechanical, busy, distracting, foggy. Although large, it’s less a full-scale new work than a semi-operable souvenir.

Certainly the musical’s book, by Bob Gale, sticks as close to his 1985 screenplay (written with Robert Zemeckis, the movie’s director) as stagecraft and current-day taste permit. The Libyans who threaten Doc Brown are gone, swapped for radiation poisoning, which as yet has no defenders.

But Marty is still the same frustrated would-be rock ’n’ roller, stuck in cookie-cutter, Reagan-era Hill Valley, California — and, worse, in a family of beaten-down losers. When Doc’s DeLorean accidentally transports the teenager to 1955, during the exact week in which George McFly (his patsy father) and Lorraine (his boozing mother) fell in love at a high school dance, his presence threatens to create a causal paradox, interfering with their courtship and erasing his own existence.

You wouldn’t expect the adapters to change that; the working out of the paradox is the best thing about the screenplay. Nor would you expect them to drop Doc’s unaccountably beloved catchphrase, “Great Scott,” though invoking it 13 times is perhaps a dozen times too many.

Still, you might hope that something in the musical, for instance music, would change the way the material lands. It doesn’t. The numbers carried over from the movie and performed by Marty at that high school dance — including Chuck Berry’s “Johnny B. Goode” and Huey Lewis and the News’ “The Power of Love” — are of course effective as ensemble opportunities. But neither they nor most of the 17 new songs by Alan Silvestri and Glen Ballard, though tuneful and in a few cases rousing, do anything different from what the movie did anyway. Like Silvestri’s John Williams-y main title music, repurposed here as a brief overture, they are too generic for that.

The exceptions underline the problem. One is “Gotta Start Somewhere,” a song for Goldie Wilson, a janitor in 1955 who we already know will run for mayor 30 years later. That nice but underfed idea from the screenplay becomes a can’t-help-but-smile barnburner here, with a classic musical theater theme (underdog dreams big) sparking a classic musical theater performance (by Jelani Remy). Similarly, “My Myopia,” the appealingly peculiar song that introduces George in 1955, creates the illusion of depth (“My myopia is my utopia”) from a plot hole.




Rando’s staging of that number is not ideal; although George (Hugh Coles) is supposedly peeping at Lorraine from a tree, it looks more like he’s in a rowboat made of leaves. And Lorraine (Liana Hunt) apparently misunderstands the physics of reflection because she’s using her open bedroom window as a mirror.

It’s a rare visual misstep for Tim Hatley, the show’s set and costume designer, who has generally provided astonishingly satisfying theatrical versions of the movie’s settings and — with sound designer Gareth Owen, lighting designers Tim Lutkin and Hugh Vanstone, video designer Finn Ross and illusion designer Chris Fisher — those surprisingly old-fashioned newfangled effects.

The inventiveness and surprise of the climactic sequence — we see Doc climbing the crucial clock tower in a hilariously fake layering of live action behind a scrim and animation projected onto it — makes the show’s obsessive concern with faithfulness elsewhere feel like a cheap compromise.

And yet it’s not really faithful. The movie is carefully balanced in tone; the musical is dialed up uniformly to 88 mph. Coles, a carry-over from the 2021 London production, which won the 2022 Olivier award for best new musical, essentially duplicates and then vastly exaggerates Crispin Glover’s already exaggerated George. Bart, too idiosyncratic merely to copy the idiosyncrasies of the movie’s Christopher Lloyd, instead adds a descant of commentary atop them, sometimes seeming to extemporize a different show entirely. And Likes, though not at all reminiscent of expert Michael J. Fox in the movie — in tribute to whom there’s a nice Easter egg — is given nothing new to do except sing, which he does very well.

That the problems of musical adaptation, even when solved, come to define the production — good workarounds are not the same as good work — suggests the “Why?” problem at its heart. Why, other than the opportunity to rake in a gazillion more dollars, make a musical out of a movie that clearly does not want you to?

I say that because, like most pop science fiction, “Back to the Future” resists (and barely benefits from) deepening. Its plot is necessarily complex and its characters compensatorily flat — instead of, preferably for a musical, the other way around. The movie’s two hours were barely enough to tell the story; to tell it in about 2 1/2, while leaving room for those 17 new songs, everything else has been cut to the bone, with no room for subtlety, let alone expressivity. Why then bother with the songs in the first place?

Making material shallower, even if cleverly, is not a great argument for adaptation. It can be defended if some other value is countervailing. For me, the show’s stagecraft and general high spirits come closest to providing that value, but they are too often undone by 1955-ish ideas of Broadway style (cartwheeling cheerleaders, backflipping jocks) and 1985-ish plot points held over from the movie. The Libyans may be gone, but the story still valorizes a peeping Tom and suggests that a white boy introduced “Johnny B. Goode” three years before a Black man actually wrote it. That’s what we call a caucausal paradox.

Although much praised at the time of its release and more recently beatified as one of the all-time greats, the movie, with its implicit consumerism and win-at-all-costs ethos, has always struck some people — including Glover — as morally hollow. One of the sour notes in the musical is the way it sings the same tune. Still, in this first post-“Phantom of the Opera” season, I have to admit that the car alone might be worth a ticket. It fills a deep Broadway longing for large objects performing audience flyovers — and, like the dear departed arthritic chandelier, may be doing so for the foreseeable future.

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‘Back to the Future: The Musical’

At the Winter Garden Theater, Manhattan; backtothefuturemusical.com. Running time: 2 hours 35 minutes.

This article originally appeared in The New York Times.