Entitled A Work in Progress, the acclaimed singing actress will perform at the intimate cabaret both nights at 9:30 PM. Jonathan Freeman, Testa's 42nd Street co-star, directs the evening, which features musical direction by her collaborator Michael Starobin. The premise of Testa's new show, according to press notes, is "the concept of a sleepless night; an active mind." Cabaretgoers can expect to hear tunes by Rusty Magee, Michael John LaChiusa, Ricky Ian Gordon, Jill Solbule, Bolcum and Weinstein.

On Broadway Mary Testa has been seen in Chicago, Barnum, Marilyn, The Rink, A Funny Thing Happened on the Way to the Forum, On the Town, Marie Christine and 42nd Street, earning Tony nominations for her work in On the Town and 42nd Street. Recently seen Off-Broadway in See What I Wanna See, her other theatre credits include String of Pearls, Lend Me a Tenor, The Vagina Monologues, The Wax, From Above (Obie Award), Lucky Stiff, In Trousers, Tartuffe and On the Town (Obie Award).

Joe's Pub is located within the Public Theater at 425 Lafayette Avenue. Tickets, priced at $25, are available by calling (212) 239-6200 or by visiting www.telecharge.com.