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Yo La Tengo and the Decemberists have been added to the lineup for the fictional "Parks and Recreation" unity concert.  They're set to take the stage on the upcoming season finale of the NBC comedy along with Wilco's Jeff Tweedy, Letters to Cleo, and R&B star Ginuwine. 

"Parks and Rec" producer Michael Schur tells "The AV Club" one of their writers is good friends with Yo La Tengo, so he helped convince them to come on the show and play an Indiana-based Knight Ranger cover band known as Bobby Knight Ranger. 

Season six of Amy Poehler's "Parks and Rec" comes to a close on April 24th. 

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