The 9th annual event, to be presented Nov. 9 at 8 PM at the American Airlines Theatre, is presented by Montblanc. Proceeds will benefit Urban Arts Partnership, a not-for-profit organization that brings arts education programs into New York City public school classrooms.

The aforementioned starry lineup will join the already-announced roster of actors including Amber Tamblyn, David Cross, Elijah Wood and Rosie Perez. Playwright Theresa Rebeck will join the put-upon scribes that will feature Warren Leight, David Lindsay-Abaire and Nathan Jackson. Swedish band A Camp (Nina Persson and Nathan Larson) serve as musical guests. More participants will be announced.

The 24 Hour Plays on Broadway, according to press notes, "will begin the night before the show with a group of six writers, six directors, 24 actors, two musical guests, and a production crew. After casts and crews have been briefed, each writer is tasked with composing a ten-minute play by 7 AM the following morning, when the directors return to read and select their piece. The casts will meet for the first time at 8 AM, are rehearsed over the next 12 hours and at 8 PM, the six new plays and musical acts will be performed for a live audience."

The American Airlines Theatre is located at 227 West 42nd Street. Tickets are available by visiting www.SmartTix.com or by calling (212) 868-4444.