Behind the scenes of glee Chapter 20

Here is the video for a sneak preview of Chapter 20 transimeten in America today.The boys dress up and sing Lady Gaga 'Bad Romance. "The video can be seen talking to Amber Riley (Mercedes) along with Jenna Ushkowitz (Tina) who are abasalladas by Dianna Agron (Quinn Fabray) becoming the frightened and screaming 'a monster'!!