Chenoweth played Lily Garland in a Broadway revival of "On the Twentieth Century", opposite Peter Gallagher, which began previews on February 12 and opened on March 12, 2015, for a 22-week limited engagement through July 19, 2015, at the Roundabout Theatre Company. Ben Brantley of "The New York Times" wrote that Chenoweth "uses character's histrionics to create one of the most virtuosic portraits in song ever on Broadway. The vocal vocabulary she deploys here ranges from jazz-baby brass to operatic silver, often in a single number, and she switches among them with jaw-dropping ease. And every perfectly weighted note is set off by an impeccably exaggerated gesture." She was nominated for a Tony Award and won a Drama Desk Award for her performance.