The 35-year-old singer, who will make his Broadway debut later this year, presented the performance from Fiddler on the Roof featuring Tony nominee Danny Burstein.
While bringing him to the stage, host James Corden said that the connection between the singer and the show is that Josh starred as Tevye in his high school production of Fiddler. He then showed a video of the performance, which you can watch below!
Make sure to get your tickets to see Josh in Natasha, Pierre, and the Great Comet of 1812. It opens in November!