Daniel Radcliffe, Jonathan Groff and Lindsay Mendez dish on their revival of Stephen Sondheim’s classic musical “Merrily We Roll Along,” and debate who’s the best dancer in the show. The cast also share their thoughts on whether they want to know if a specific celebrity is in the audience, and their favorite things about living and raising kids in New York City.

In celebration of the hit Broadway revival of “Merrily We Roll Along,” stars Daniel Radcliffe and Jonathan Groff battle co-star Lindsay Mendez and Kelly to see who can answer Broadway trivia questions first in a new game we like to call “I Have To Know If You Know This Show!”