Mumford & Sons' rootsy folk music is rather serious, but the men who make it aren't. The English band demonstrated their sense of humor in the video for 'Hopeless Wanderer' from 'Babel.'

It starts out with band members playing their beloved instruments while their faces are somewhat obscured by the bright light of the sun. Once their identities are revealed, it's quite an unexpected shocker.

Marcus Mumford and crew are nowhere to be found in this video. In their stead are Jason Sudeikis, Ed Helms, Jason Bateman and Will Forte -- four brilliant comedic actors who've starred in hilarious fare like 'Horrible Bosses,' 'The Hangover' and more. The foursome take on the roles of Mumford band members in 'Hopeless Wanderer.' In essence, it's Mumford & Sons offering a brilliant send up of themselves, proving that they do have a lighter side.

Comedians lip-synching in a barn, struggling while pretending to play instruments ... What's funnier than that? Fans should be okay with giving Mumford & Sons a night off, so to speak, when they've got top-notch comedians filling in, if only for the space of a music video.

There's some raunchy behavior -- a little bumping and grinding, a comedic and bearded kiss, partying in a pub. and smashed instruments. Sudeikis, Helms, Bateman and Forte do the Mumfords proud.

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