On September 18, the cast of Broadway's Just in Time, led by Jonathan Groff, took the stage on The Tonight Show for a special performance. Groff, who plays Bobby Darin, performed "Mack the Knife." The appearance aired on Thursday, September 18 at 11:35/10:35c on NBC. Check out the performance here! Developed and directed by Tony Award winner Alex Timbers, Just in Time invites audiences to experience the great America…
SOURCE: BroadwayWorld at 06:18AM on September 19, 2025