Lady Gaga Makes Surprise NYC Nightclub Appearance

Lady Gaga loves to surprise fans with cameo appearances and performances. And on Wednesday night in New York City, Gaga did it again when she popped up at the Plaza Hotel's famed nightclub, the Oak Room.

Gaga took the stage during a scheduled set by her friend, singer/trumpeter Brian Newman, to perform two jazz standards, "Someone to Watch Over Me" and "Orange Colored Sky." Before Gaga's surprise performance, Newman expressed his excitement about the show, tweeting, "Looking forward to the gig at the @oakroomny @theplazahotel tonight! First show of 2011!!"

For her set, Gaga donned long blond locks and a leather bandage-style S&M dress along with garters. In a video posted online, Gaga displayed her strong singing ability while forgoing her usual raucous onstage antics as she belted out the tunes for the cheering crowd.

The club's staff posted news of the performance on its Twitter page as it happened, telling fans to come by if they could and keeping those who couldn't in the loop. "Come to the packed @oakroomny @theplazahotel right now to see LADY GAGA — singing, dancing — its amazing!!!" they tweeted. "Lady Gaga @oakroomny right now singing LIVE!!!!!... its packeddd."

It's not the first time that Gaga has surprised Oak Room clubgoers during a show by Newman. Mother Monster also performed at the New York hotspot back in September, wearing a dress made of human hair. "There were no tickets sold," the club said in a statement at the time. "She sang three songs as a surprise gig because she's friends with the musician we have on Wednesdays, Brian Newman."