Ann Hampton Callaway, the singer-songwriter-pianist who was Tony Award-nommed for Broadway's Swing!, makes her debut at Feinstein's at the Regency with her new cabaret act, Signature, Oct. 16-Nov. 3.

The mellow Callaway's show features selections from her upcoming CD, "Signature," which features the signature songs of the great jazz legends of the 20th century, including Frank Sinatra, Tony Bennett, Sarah Vaughan, Billie Holiday, Ella Fitzgerald, Nat King Cole, Mel Torme and Peggy Lee. The CD is performed with pianist Kenny Barron and guest artists Wynton Marsalis, Freddy Cole and the New York Voices.

In her nightclub gig, Callaway will be joined by an all-star jazz band featuring special guest pianists (on select dates) Cyrus Chestnut , Benny Greene and Kenny Barron.

Callaway's pop and jazz vocals earned her a Best Featured Actress Tony nom for Swing! and won her the 2000 Theatre World Award for Outstanding Broadway Debut. As a songwriter, she received ASCAP's Johnny Mercer Songwriting Award. Nationally, her most famous song may be "A Nanny Named Fran," which she wrote and performed for the CBS-TV hit "The Nanny." Her song, "At the Same Time," was recorded by Barbra Streisand for her CD, "Higher Ground." She has also written the only original Christmas song on Streisand's upcoming CD, "Christmas Memories."

Feinstein's is the cozy cabaret within The Regency Hotel, at 540 Park Avenue at 61st Street in Manhattan. Performances are 8:30 PM Tuesday-Saturday, with an additional late show 11 PM Friday-Saturday. Admission for late show is $60 cover plus $25 minimum, with 8:30 PM admission $60 cover plus $39.50 minimum. Jackets are suggested, but not required. For information or reservations, call (212) 339-4095.

— By Kenneth Jones