The 8 PM performance will benefit Family Equality Council, Empire State Pride Agenda, Equality California, Garden State Equality and The Vermont Freedom to Marry Task Force, five charitable organizations working to "promote equality and protect civil rights for the gay and lesbian community."

Hosted by the cast of Wicked, the evening will boast the Broadway debut of Marc Shaiman's Prop 8 - The Musical (Shaiman will also perform) as well as a special performance by Wicked composer-lyricist Stephen Schwartz and pop star Cyndi Lauper, who made her Broadway debut in the recent revival of The Threepenny Opera.

Also currently scheduled to be part of the one-night-only event are Douglas Carter Beane, Shoshana Bean, PJ Benjamin, Mike Birbiglia, Stephanie J. Block, Tamara Braun, Daniel Breaker, Kerry Butler, Lynda Carter, Gavin Creel, Paige Davis, Harvey Fierstein, John Gallagher, Jr., Judy Gold, Jonathan Groff, The Gay Men's Chorus, Malcolm Gets, Jane Houdyshell, Crystal Hunt, Mark Indelicato, Allison Janney, Capathia Jenkins, Carson Kressley, Nathan Lane, Laughing Pizza, Adriane Lenox, Cameron Mathison, Rue McClanahan, Phyllis Newman, Patrick Paige, Nicole Parker, David Hyde Pierce, Billy Porter, Seth Rudesky, Sherri Saum, Christopher Sieber, Carole Shelley, Doug Spearman, Mary Testa, Tamara Tunie, Michael Urie, Scott Wittman, The Broadway Boys, Don't Quit Your Night Job, members of the closing cast of Gypsy, cast members from Billy Elliot, cast members from Jersey Boys, cast members from The Color Purple national tour, cast members from The Lion King, cast members from The Little Mermaid, cast members from Mary Poppins, cast members from "Saturday Night Live," cast members from "Sesame Street," cast members from South Pacific, original cast members from Spring Awakening and cast members from Wicked.

Schele Williams and Anthony Galde will direct Defying Inequality with musical direction by James Sampliner.

For tickets and more information, call (212) 307-4100 or visit www.defyinginequality.com.