Grease!'s Billy Porter, Aida's Cheyenne Jackson and Schele Williams, Hairspray's Shoshana Bean, Sarah Plain and Tall's Kate Wetherhead and Courtney Balan will all be on hand to perform Alan's songs. Wetherhead and Balan, who co-star in Alan's upcoming musical Piece, will present a song from that musical. Piece, according to production notes, concerns "a 44-year-old women who recalls her life through the eyes of her 17, 26 and 35-year-old selves." Gerry McIntyre will direct the 7 and 9 PM performances. Avenue Q's Stephen Oremus will accompany Porter on piano. Scott Alan, a cousin of Dream True's Ricky Ian Gordon, will accompany the singers and perform some of his works. In related news, the songwriter and singer-actress Bean have recorded "Home," a song from Piece. That recording can be found at www.scottalan.net.

The Duplex Cabaret Theater is located at 61 Christopher Street. There is a $12 cover and a two-drink minimum; call (212) 255-5438 for reservations.