You've already seen some of the Glee promos for Season 2 — and already hyperventilated — but this one might cause you to faint. Seriously.

The latest promo is not only a bit longer than the previous incarnations, but also offers us a first look at Rachel's (Lea Michele) new nemesis, Charice. Even better, it gives us a peek at Lea and Charice's killer rendition of the Lady Gaga/Beyonce smash, "Telephone"! But wait, there's more: They duet in the McKinley High bathroom.

Um, yeah, you want to see this.

Source: OhNoTheyDidn't