Add the Decemberists to the list of musicians expected to appear this fall on 'The Simpsons.' A day after it was announced that Tom Waits will lend his legendary voice to an episode of the long-running Fox animated comedy, Decemberists frontman Colin Meloy posted on his Twitter feed the awesome picture above of his band as they appear on the show. 

"Oh wow. This is happening," reads the note Meloy tweeted along with the picture, which perfectly captures the folk-rock quintet in all of its well-dressed, bespectacled glory. And while no one affiliated with Fox or 'The Simpsons' has yet to make a statement, Pitchfork reports that "the Decemberists' newsletter confirms that the band will appear on a December 2 episode called 'The Day the Earth Stood Cool.'" Good enough evidence for us.

Zooey Deschanel of She and Him, Fred Armisen and Carrie Brownstein of 'Portlandia,' Patton Oswalt and renowned pop singer Justin Bieber are among the other guests lined up to join Waits on this season of 'The Simpsons,' which is the show's 24th overall.