Wild Cub’s kaleidoscopic, galloping “Thunder Clatter” may sound familiar. Bose used the song in a UK spot last year, and it recently sat atop Sirius XM’s Alt Nation Alt 18 countdown for four weeks straight, besting Arcade Fire and Lorde. On Tuesday, the Keegan DeWitt-led troupe also performed “Thunder Clatter” on Late Night With Jimmy Fallon, which should further validate Nashville’s non-country, non-durrr-rock bona fides outside the South. (Rising acts Jensen Sportag, Bully, and Mikky Ekko are helping this shift.) The song’s appeals are myriad, so we shouldn’t be surprised that it’s getting around: Bathed in tropical hues, “Thunder Clatter” is nuanced yet refreshingly direct, and Wild Cub’s new wave influences pull just enough weight to cloak its love song-y lyrics in a shroud of cool. Traces of New Order, The Cure, and Cut Copy abound, yet “Thunder Clatter” is a singular, self-contained achievement nonetheless.