"Merrily We Roll Along" has long been considered the biggest flop of Stephen Sondheim's career, even as it features some of his most ambitious musical work. Now, after a successful run at the New York Theatre Workshop, a new revival of the musical starring Daniel Radcliffe, Lindsay Mendez, and Jonathan Groff comes to Broadway. We speak with director Maria Friedman, who once starred in a Haymarket production of this musical, on how she made this notoriously difficult show work. "Merrily We Roll Along" is running at Hudson Theatre through March 24, 2024.