The Power of Two was originally scheduled to run at the posh nightspot through June 12. Additional shows will now be presented June 25-27 at 8 and 10:30 PM each night.

Cabaretgoers can expect pop songs, classic standards and songs from The Pajama Game, City of Angels and Finian's Rainbow.

Other show times are June 4 at 8 PM and 10 PM; June 5 at 8 PM and 10 PM; June 10 at 8:30 PM; and June 12 at 8 PM and 10 PM. On June 11 Feinstein will perform without Jackson at 8 PM and 10 PM.

Cheyenne Jackson, who was seen in the film "United 93," has appeared on Broadway in Xanadu, All Shook Up, Aida and Thoroughly Modern Millie. He starred in the premiere cast of Altar Boyz, and his regional credits include West Side Story, The Most Happy Fella, Children of Eden, Hair, Carousel, Damn Yankees and Kismet. Jackson is a member of the Broadway Inspirational Voices and was seen Off-Broadway in The Agony and the Agony and at City Center in Damn Yankees and Finian's Rainbow.

A five-time Grammy nominee, Michael Feinstein is often credited with reinvigorating interest in the American popular song. The crooner has performed in concert halls around the world and on Broadway and now co-owns his own nightclub, Feinstein's at Loews Regency. His numerous solo recordings include "The Sinatra Project," "Michael and George: Feinstein Sings Gershwin," "Big City Rhythms" "Romance On Film, Romance On Broadway," "Michael Feinstein with The Israel Philharmonic Orchestra," "Only One Life: The Songs of Jimmy Webb" and "Hopeless Romantics." Feinstein's at Loews Regency is located within the Regency Hotel at 540 Park Avenue at 61st Street. All shows have a $95 cover with $150 premium seats and $250 up-front seats also available; there is also a $40 food and beverage minimum.

For ticket reservations and club information, call (212) 339-4095 or visit feinsteinsatloewsregency.com and TicketWeb.com.