The engagement, which continues through New Year’s Eve, marks the final offering at the intimate nightspot, which will close its doors at the end of the year.

Ebersole and Feinstein's duets show features classic standards and Broadway hits, in addition to rarities from the Great American Songbook. Feinstein will also perform selections from "The Gershwins and Me," his new CD and book from Simon & Schuster.

Musical director John Oddo leads an all-star band.

All shows take place at the Regency Hotel (540 Park Avenue at 61st Street).

All shows are at 8 PM through Dec. 30 with additional 10:30 PM shows on Friday, Dec. 28 and Saturday, Dec. 29. On New Year’s Eve, Ebersole will perform solo at 7 PM and then with Feinstein at 10:45 PM. For the shows December 23-30, there is a $60 cover charge per person with a $40 food and beverage minimum. For New Year’s Eve, Ebersole’s 7 PM show has a $175 cover charge and an additional $40 food and beverage minimum. For Feinstein and Ebersole’s 10:45 PM show, there is a $350 cover charge, which includes three-course dinner and champagne.

Jackets are suggested but not required. For ticket reservations and club information, call (212) 339-4095 or visit at FeinsteinsatLoewsRegency.com and TicketWeb.com.