Madonna danced "Gangnam Style" with Psy

Korean rapper Psy surprised Madonna’s fans in New York City as he joined on stage at the Madison Square Garden and danced the infectious tune of “Gangnam Style.”

It started as splice of Madonna’s “Give It To Me” with the beats of the Korean hit. Suddenly turned into a “Gangnam” dance frenzy, Psy went onstage in his trademark shades and red suit.

Psy stayed on to join Madonna in her hit “Music.”

Here's the video from the wire agency The Associated Press.