Groff also starred in an Encores! production of the musical "A New Brain" as Gordon Schwinn, a composer who suffers from arteriovenous malformation, based on the real-life composer William Finn. The production, which took place from June 24 to June 27, 2015, was presented as part of the New York City Center's Encores! Off-Center staged concert series and was directed by James Lapine, with Groff performing alongside Aaron Lazar, Dan Fogler, and Ana Gasteyer. Groff was praised for his performance, as one critic from the "New York Post" says, "Though the musical is uneven, Groff effortlessly keeps the production together with his supple voice and low-key charm."