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Skylar Astin, Kerry Butler, Lauren Pritchard, Benjamin Walker, Tony Yazbeck, and John Lloyd Young will join previously announced stars Susan Blackwell, Telly Leung, Nellie McKay, and Sarah Steele participating in Broadway Karaoke, a benefit for the Roundabout Theatre Company's education programs, to be held 6pm-9pm on Monday, May 5 at Arena (135 West 41st Street). Seth Rudetsky will host the event.

In addition to these actors' off-the-cuff musical performances, the evening will include a pre-show cocktail party and a post-show open-mic hour.

Tickets are $200-$500. To order, call 212-719-1300. For more information, visit www.roundabouttheatre.org.