The 24 Hour Plays company teams with the Exchange to produce the Jan. 21, 2008, benefit event at Joe's Pub. Proceeds from the event will benefit the Exchange and the Orchard Project.

"Sixteen stars. Four composers. Four directors. Two choreographers," boasts show materials. "Four brand new musicals will be written, cast, rehearsed and performed at Joe's Pub in a single day, featuring an all-new all-star line up of Broadway performers, great composers and writers, directors and to top it all off, choreographers and musical directors."

Tony winner Ted Sperling (The Light in the Piazza, Striking 12) will serve as creative director for the evening.

Scheduled to appear are Celia Keenan Bolger (...Spelling Bee), Kerry Butler (Xanadu), Victoria Clark (The Light in the Piazza), Gavin Creel (Thoroughly Modern Millie), Cheyenne Jackson (All Shook Up), Nellie McKay (The Threepenny Opera), Denis O'Hare (Take Me Out), Mo Rocca (Spelling Bee), Claudia Shear (Dirty Blonde), Tracie Thoms ("Rent") and Rita Wilson (Chicago).

Creatives will include David Yazbeck (Dirty Rotten Scoundrels) and Moises Kaufman (The Laramie Project).

The event will include cocktails, dinner and the show at 7 PM. A VIP dessert after party will begin at 9:30 PM. For more information on tickets (starting at $250) and tables, call (646) 502-7453 or visit exchangenyc.org.