Orlando Bloom, Stephen Colbert and Tina Fey are confirmed to appear on the June 11 broadcast of the Tony Awards ceremony in New York.
Kevin Spacey is to host the show at Radio City Music Hall.
It is to air on CBS.
The Josh Groban-led "Natasha, Pierre & The Great Comet of 1812" goes into the event with a leading, 12 Tony Award nominations, including Best Musical.
The show will compete with "Come From Away," "Dear Evan Hansen" and "Groundhog Day" for the top prize.
Following close behind is the revival of "Hello Dolly!" with 10 nods and "Dear Evan Hansen" with nine.