'Glee' songs: Listen to the music from 'Feud'Add to Favorites | Glee
What brought on this feuding? Beyond the normal conflicts that plague everyday life on "Glee," there is the big issue of how Finn ( Cory Monteith) kissed Emma ( Jayma Mays) shortly before she was supposed to marry Will ( Matthew Morrison). That kind of thing tends to make people angry.
In order to combat this, the members of New Directions assign their instructors to the task of exploring musical feuds. This is "Glee," so this will probably help a lot.
Meanwhile in New York, things are also tense. With Santana ( Naya Rivera) as a roommate and issues between Rachel ( Lea Michele) and Brody ( Dean Geyer), tension may be inevitable.
The first song is "How to Be a Heartbreaker," performed by Rachel and Brody.
Next, we return to high school for a mash-up of Elton John's "The Bitch Is Back" and Madonna's "Dress You Up," performed by Ryder ( Blake Jenner) and Unique ( Alex Newell).
The mash-ups continue when Will and Finn lead "Bye Bye Bye" (by 'N Sync) and "I Want It That Way" (by the Backstreet Boys), respectively.
Back in New York, Santana sings what could be one of her anthems with "Cold Hearted" by Paula Abdul.
Are Ryder and Jake ( Jacob Artist) still rivals in love? They may be since they have a duet, "Closer" by Tegan and Sara.
Finally, Finn and Sue ( Jane Lynch) channel "American Idol" controversy with "I Still Believe" (by Mariah Carey) and "Super Bass" (by Nicki Minaj)
"Feud" airs on Thursday, March 14 at 9pm on FOX.