Jonathan Groff visited The Tonight Show Starring Jimmy Fallon September 18 to perform "Mack the Knife" from Just in Time. Check out video of the performance above.

Broadway's current Bobby Darin biomusical is now playing the Circle in the Square Theatre. Just in Time tracks the life story of 1950s crooner Bobby Darin, with Tony winner Groff performing Darin's greatest hits, including "Beyond the Sea," "Splish Splash," and "Dream Lover."

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The musical also features Tony winner Michele Pawk (Wicked), Joe Barbara (A Bronx Tale The Musical), Drama Desk nominee Emily Bergl (Good Night, Oscar), Sadie Dickerson, Gracie Lawrence, Lance Roberts (The Music Man), Caesar Samayoa (Come From Away), Christine Cornish (Kiss Me, Kate), Julia Grondin (Funny Girl), Valeria Yamin (Moulin Rouge!), John Treacy Egan (My Fair Lady), Tari Kelly (Mr. Saturday Night), Matt Magnusson (A Wonderful World), Khori Michelle Petinaud (Lempicka), and Larkin Reilly (Bad Cinderella). Sarah Hyland will succeed Lawrence beginning October 8.

The work, developed by Timbers and based on an original concept by Ted Chapin, features a book by Tony winner Warren Leight and Isaac Oliver (The Marvelous Mrs. Maisel). Shannon Lewis choreographs with music supervision and arrangements by Andrew Resnick, who also penned the orchestrations with Michael Thurber.

The production also features scenic design by two-time Tony winner Derek McLane (Death Becomes Her), costume design by eight-time Tony winner Catherine Zuber (Moulin Rouge!), lighting design by Tony winner Justin Townsend (Here Lies Love), and sound design by Tony winner Peter Hylenski (Maybe Happy Ending).

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Scott Rowen is the production stage manager, and Live Wire Theatrical is the general manager. Tom Kirdahy, Robert Ahrens, John Frost, and Groff are producing.

Just in Time was nominated for six 2025 Tony Awards, including for Groff and Lawrence's performances, though it won none. Groff won a Tony Award last year for his performance in the Tony-winning revival of Merrily We Roll Along (which will be released in movie theatres later this year), and has also appeared on Broadway in Spring Awakening and Hamilton.

Visit JustInTimeBroadway.com.