Mumford & Sons stopped by Live On Letterman in New York City for an epic folk-rock performance, playing a 45-minute set including songs from their latest album, Babel. The band also strummed out hits from their debut album, Sigh No More, including "Little Lion Man" and "The Cave".

Stream the webcast here to check out the guys on the Live on Letterman stage. Are you as obsessed with the new Mumford & Sons album as we are?