Hipsters unite! The full soundtrack listing for 'The Muppets' has finally been revealed, and it's cool enough to make you grow a beard and move to Williamsburg. 'Flight of the Conchords' star Bret McKenzie has four songs on the album, while Feist and Joanna Newsom make appearances as well. And then there are the Muppets. Who wanted to hear their favorite felt creatures cover "Smells Like Teen Spirit"? Oh, right: everyone! Check out the listing ahead.