Glee Season 4, Episode 9: “Swan Song” doesn't air until Thursday, but you can already get a sneak peek of what to expect with these first-look clips of the episode. FOX has released a handful of teasers at all of the drama to come during this week's episode. In Lima, Finn (Cory Monteith) and Sue (Jane Lynch) will go head to head  while over in NYC, Rachel (Lea Michele) and Cassie (Kate Hudson) have a battle of their own! Take a look at what's about to go down.

Credit: Glee on Fox on YouTube Photo: Watch: The Cheerios Take Over The New Directions' [Spoiler] in Glee Season 4, Episode 9: “Swan Song”
Credit: Glee on Fox on YouTube Photo: Watch: Rachel and Kate Hudson's Cassie's Full Performance of "All That Jazz" in Glee Season 4, Episode 9: “Swan Song” (VIDEO)
Credit: Glee on Fox on YouTube Photo: First Look at Glee Season 4, Episode 9: “Swan Song” — Rachel and Kate Hudson's Cassie Have a Dance-Off! (VIDEO)
Credit: Glee on Fox on YouTube Photo: Watch: Rachel Gets a Huge Honor From NYADA in Glee Season 4, Episode 9: “Swan Song”(VIDEO)
Credit: TelevisionPromos on YouTube Photo: Promo for Glee Season 4, Episode 9: “Swan Song” — Brittany and Sam Kiss! (VIDEO)

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