Sundance ‘25: 'THE BALLAD OF WALLIS ISLAND' A Crowd-Pleasing Folk Charmer

It’s been a decade since the folk duo McGwyer (Tom Basden) and Mortimer (Carey Mulligan) broke up. But if Charles (Tim Key), an eccentric, well-meaning, and possibly unhinged wealthy bachelor, has anything to do with it, their reunion is imminent. He’s determined to bring them together for one last performance—both as a personal passion project and a tribute to his late wife, their biggest fan. What follows is a funny, bittersweet, and deeply charming British comedy musical, powered by strong performances and even stronger music.

Directed by James Griffiths, The Ballad of Wallis Island strikes a winning balance between cringeworthy dad jokes and an earnest meditation on loss. The result is a crowd-pleaser that plays just as well for 20-somethings as it does for their grandparents. Griffiths’ sharp comedic timing and heartfelt sincerity make for a film that’s hard to resist.

The film handles Herb McGwyer and Nell Mortimer’s “will they/won’t they” dynamic with surprising maturity. This isn’t some fantasy about rekindling lost love. There’s no naïve belief that time can be reversed, even if some are too blinded by their own mercurial impulses to see it. Herb and Nell’s past romance is inseparable from their music, which makes performing together again complicated. Their harmonies are as soulful as ever, but the emotional weight behind them may be hollow.

Key’s Charles is a wildcard—hilarious if you’re on his wavelength, exhausting if you’re not. His endless stream of quips, puns, and cringe-inducing earnestness gets under Herb’s skin, but Nell finds his enthusiasm oddly endearing. Their push-and-pull fuels much of the film’s comedy, but it’s Charles’ unexpected depth that sneaks up and wallops you by the end. Beneath all the forced jokes is a man desperate to feel connected again. Basden plays Herb as a world-weary sellout, a former folk purist who’s been churning out commercial fluff for years. He initially agrees to the reunion for the half-million bucks Charles offers him, but along the way, he finds something far more valuable. The film wisely focuses less on whether he and Nell will reconcile and more on whether he can reconcile with himself.

The songs are genuinely great—think The Tallest Man on Earth meets Fleetwood Mac, earthy and unpretentious. Mulligan and Basden’s harmonies don’t just sound good; they carry history, layering the music with a wistfulness that words alone couldn’t capture. The film knows exactly when to let a song breathe, using its music as a storytelling tool rather than a backdrop. Applying that same sentiment to its directorial choices, The Ballad of Wallis Island makes its titular Welsh island setting feel both intimate and humbly breathtaking. Griffiths balances humor and melancholy with ease, delivering a film that earns its laughs as much as its emotional beats. It’s the kind of crowd-pleaser that doesn’t pander, warm and self-aware without being overly sentimental or maudlin. Much like a sad, sweet love song, best heard with nothing but an acoustic guitar and two voices, singing together.