Spoiler Alert – No one is safe from PSY. First it was Wolverine, and now Glee is the latest to fall prey to the Gangnam Style craze.

Check out the video below for a behind the scenes look as the cast rehearses the dance number, and the kids from New Directions perform the song at show choir sectionals.

But before we see the number in an episode airing in late November, Glee is back next week (November 8th) with “The Role You Were Born to Play,” the first of two episodes chronicling McKinley High’s school musical, Grease.