Last night's episode of The Colbert Report featured footage from host Stephen Colbert's hilariously titled music festival, StePhest Colbchella '012: RocktAugustFest. In particularly, he aired video of Grizzly Bear's performance, which featured two tracks from their upcoming Shields album and an old favorite in "Two Weeks."

You can watch them do "Yet Again" above while "Sleeping Ute" and "Two Weeks" are below. Shields drops September 18.