The star-studded evening will also feature Sierra Boggess, Jayne Houdyshell, and more.
Nathan Lane and Megan Mullally star in the one-night-only gala performance.
The play reading took place on December 16.
The cast will also include Celia Keenan-Bolger, Kristine Nielsen, Richard Kind, and John Ellison Conlee.
Lane will reprise his role as Nathan Detroit in the benefit concert.