[Watch] The Mountain Goats - "Birth of Serpents" (Live on Letterman)

John Darnielle and The Mountain Goats bring their forthcoming album All Eternals Deck to Letterman debuting their new tune "Birth of Serpents." Check it out in the player above courtesy of the real king of late night (blogging) The Audio Perv. All Eternals Deck hits physical and digital shelves March 29th via Merge Records.