This week's episode of 'Glee' is called 'Feud,' and in the spirit of fighting and drama, the song list includes several mashups between artists who (allegedly) don't like each other.

The 'Glee' producers include a nod to 'American Idol' with a medley of songs from the show's feuding judges, Mariah Carey and Nicki Minaj. Remember when Jane Lynch expertly rapped Minaj's 'Super Bass' on 'Conan'? Now viewers will get to see that on the show, as Sue and Blaine perform 'Super Bass' and Carey's 'I Still Believe.' We're not sure how an emotional ballad meshes with a modern hip-hop song, but 'Glee' has pulled off strange pairings like this before.

'N Sync and the Backstreet Boys were always rivals on the charts, so 'Glee' brings together Will and Finn to sing 'Bye Bye Bye' and 'I Want It That Way.' Two other artists who have been at each others' throats for years, Elton John and Madonna, are joined up on a medley of 'The B---- is Back' and 'Dress You Up.'

Other musical highlights include Santana's take on Paula Abdul's 'Cold Hearted' and Ryder and Jake singing Tegan and Sara's 'Closer.' 'Feud' airs Thursday, March 14 at 9 PM ET on FOX.

'Glee' ‘Feud’ Songs – Full Episode List
- 'How to Be a Heartbreaker,' Brody & Rachel (Marina and the Diamonds)
- 'The B---- Is Back' / 'Dress You Up,' Ryder & Unique (Elton John / Madonna)
- 'Cold Hearted,' Santana (Paula Abdul)
- 'Bye Bye Bye' / 'I Want It That Way,' Will & Finn (N Sync / Backstreet Boys)
- 'I Still Believe' / 'Super Bass,' Blaine & Sue (Mariah Carey / Nicki Minaj)
- 'Closer,' Ryder & Jake (Tegan and Sara)

Watch the 'Glee' 'Feud' Promo