Mumford & Sons returned to the scene of their network TV debut in last night's broadcast of the Late Show With David Letterman. Two years after obligingly toning down the sore-thumb F-bomb on breakthrough song "Little Lion Man," the mega-selling British folk-rockers gave a politely rowdy rendition of bluegrass-U2 fidelity pledge "I Will Wait." The song is from Mumford & Sons' new album Babel, the name of which their host oddly mispronounced (twice!), at least per the band's own helpful guidelines.
Below, you can also watch the band's hour-long Live on Letterman set, which we previously pointed you toward shortly after they recorded it, in September. That was also before Mumford & Sons' audience-broadening Saturday Night Live performance, to which Marcus Mumford may have been alluding when he referred to his group as "the poor man's version of the Beatles." (They did a goofy cover of the Beatles' "You've Got to Hide Your Love Away" on SNL; it's a big year for "fifth Beatle" Brian Epstein, the reputed subject of the originally Lennon-sung track.)