Liz Callaway, Euan Morton, Deven May and Martin Vidnovic are the latest additions for the one-night-only event, which will be held at 8 PM at Manhattan's Town Hall. The foursome join the previously announced Sutton Foster, B.J. Crosby, Marc Kudisch, Alice Playten, Emily Skinner, Mary Testa, Barbara Walsh, Ron Bohmer, Mary Bond Davis, Cheyenne Jackson, Eddie Korbich, Norm Lewis, William Michals, Christiane Noll, Bill Daugherty, Lennie Watts, Jenifer Kruskamp and Anne Steele.

Conceived, produced, written and hosted by cabaret critic Scott Siegel, the concert will feature the aforementioned theatre/cabaret favorites performing without amplification. In a statement, producer Siegel said, "The excitement surrounding last year's concert simply demanded that we do it again. I'm thrilled and humbled by the response of the Broadway community of stars because so many of them agreed to sing in this concert with so much enthusiasm."

The musical director for the one-night-only event is Ross Patterson, who will lead his Little Big Band.

Town Hall is located in Manhattan at 123 West 43rd Street. Tickets, ranging from $25-$40, are available by calling (212) 307-4100 or by visiting the theatre's box office. (A post-show cast party, including buffet supper and beverages, is available for $50 per person; call 212-365 4345.)