The K-pop star popped up in the middle of Madonna's  show at Madison Square Garden in New York.

Listen to Madonna on iHeartRadio | Listen to Psy on iHeartRadio

Well, we’re likely nearing the end of Psy’s moment in the sun with “Gangnam  Style”—the song dropped out of the #1 spot on iTunes for the first time in  months recently, and the K-Pop star is already  looking forward to his next single and dance. But the good thing about  having an instantly recognizable look and an instantly recognizable song, as Psy  does, is that you’ll forever be welcome as a guest performer just about anywhere  you go, as you can just show up for two to four minutes, do the one thing that  everybody knows you for, and get out of the way before your presence becomes  irritating.

Psy officially entered this phase of his career last night, as he popped up  (almost literally) in the middle of Madonna’s  show at Madison Square Garden in New York. Madge gave him a nice lead-in with a  mashup of his “Gangnam Style” with her “Give It to Me,” and then Psy emerged  from under the stage, to join the Material Girl and all her backup dancers in a  rendition of hissignature  dance. Credit to Madonna for actually knowing all parts of the “Style,” and  not over-relying on the horse-riding parts of it—and actually, that “Give” / “Gangnam” mashup actually sounds pretty good, if we could get an mp3 of that  somewhere.

Funny to see Psy performing with a significantly older performer, too. Not  often that Uncle Psy is gonna be the Hot Young Thing between a duo. Watch  here—the first is better footage but abbreviated, while the second is the full  performance.

READ MORE: Popdust