Glee Season 4 airs a new episode called "Feud," Thursday on Fox. The show choir dramedy is only a couple of weeks away from the finale, so fans are now looking for teasers and spoilers. Surprises are good, but some info here and there won't hurt. For instance, Glee is tackling the feuding judges in another popular Fox show, American Idol. Ready for a Carey-Minaj mash-up?

Spoiler alert: This article contains minor spoilers, which you may (probably) have already seen coming to Glee Season 4.

Here is a round-up of Glee 4 spoilers for avid viewers of the Fox variety musical:

1. Someone is going to sport a Barbie Minaj 'do, and she'll be mean, mean, mean! (Was that too easy?)

2. Blaine will be a victim of a nasty blackmail.

3. You'll hear a mash-up of super hits from Mariah Carey and Nicki Minaj - guess which songs? (This is an obvious "peace tribute" to feuding American Idol judges!)

4. Santana is far from done uncovering Brody's business on the side.

5. New Directions is pulling a Spice Girls act!

6. Rachel and Brody will sing Radiohead's "Creep." Rocky bye-bye, coming up?

7. The New York housemates Santana, Kurt and Rachel will sing ABBA's "Mamma Mia."

8. The events mentioned above are split in two episodes: "Feud" (Mar. 14) and "Guilty Pleasures" (Mar. 21).

9. Mr Schu gets sick, and New Directions will be taken care of by unlikely leads. (No, not Finn.)

10. Lea Michele dishes the biggest teaser via Twitter: "Rachel's gonna get a visit from a familiar face we haven't seen in a while. And a big audition to prepare for!" (SPOILER UP AHEAD) Guess who's coming back. If you're a Wicked fan, you'll get the one whose character is much closer to Rachel. Idina Menzel, y'all.

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