The Lumineers

Quickly graduating from the Denver open-mic circuit to cavernous theaters and arenas around the world—thanks to the success of inescapable folk-rock ballad “Ho Hey”—the Lumineers could have easily followed in the footsteps of Mumford & Sons and started aping U2. Instead, the group has kept its acoustic instrumentation and foot-stomping rhythms intact. But that isn’t holding them back—quite the opposite—as they stop by the Forum for two packed nights.