Let’s just say that the wedding band has never occupied the most exalted rung of the ladder in music.Playing “September” and “Celebration” is often what’s most required. As one member of the Bride and the Groove, the band at the center of John Carney’s new film, puts it: They’re not rock stars. They’re human jukeboxes.But in “Power Ballad,” a wedding band singer and pop star cross paths. For one night, all of the stratification of the music world falls away. “Power Ballad” starts like a fairy tale. Since 2007’s “Once,” the Irish writer-director has focused his films on the redemptive capacity of music. Carney, who was once a bassist for the Frames, knows from experience. From “Sing Street” to “Flora and Son,” he has made unabashedly earnest tales where a song, or just picking up an instrument, changes lives.This can, undoubtedly, lead Carney into sentimental territory. Lucky for him, his chosen subject — music — is more worthy of sentiment than almost anything else. Yet the song doesn’t quite remain the same in “Power Ballad,” a movie that begins with the gentle sweetness Carney is known for, but detours into something more discordant.
Rick (Paul Rudd) is an American musician who gave up on his once-promising rock band’s future to instead live with his wife (Marcella Plunkett) and teenage daughter (a spunky, underused Beth Fallon) in Dublin. His former group was called Octagon, a perfect former band name if there ever were one.












