The Lumineers are a Denver-based folk-rock headliner built around communal refrains, stomping acoustic drive, and instantly readable songs like "Ho Hey," "Ophelia," and "Stubborn Love." For Railbird coverage, treat them as a field-wide singalong target: wide crowd unity, hands-up choruses, and close shots of Wesley Schultz/Jeremiah Fraites moments will matter more than small performance details.