Jonathan Groff will star in New York City Center's Encores! Off Center Production of A New Brain, a show he's loved since he was a young theatre fan. The William Finn (book, music and lyrics) and James Lapine (book) musical draws from Finn's real life experiences battling a brain tumor. Here, Groff tells the tale of a surreal phone call from Jeanine Tesori that brought him to the production.