It sounds like Mumford and Sons, but it definitely doesn't look like Mumford and Sons.

The British folk rock band, known for serious, lyric-driven songs, decided to poke a little fun at themselves for their new video for "Hopeless Wanderer," enlisting a few of the biggest stars in comedy to play the band.

Jason Bateman, Will Forte, Ed Helms and Jason Sudeikis star in the new video, although at first you won't know the difference. The four engage is an all-out banjo throwdown, and the video only gets more hilarious as it moves.

Once Ed Helms throws down the hammer on the piano at 1:41, it's pure gold.