The Glee Project

2. Theatricality

Idina Menzel guest mentors; the contenders sing Twisted Sister's "We're Not Gonna Take It"; someone has their first kiss.

3. Vulnerability

The contestants must tap into their vulnerable sides in order to perform a memorable rendition of "Mad World."

4. Dance Ability

The remaining contestants must show off their best moves when they are judged on their ability to dance.

5. Pairability

The remaining eight contestants are paired up in a challenge that demands cooperation: singing duets.

6. Tenacity

The contestants must prove to the mentors that they are tenacious enough to perform a mash-up song.

7. Sexuality

With only 6 Contenders left it's time to see who can portray their sexuality the best. The winner of this week's challenge will get to work with both Mark Salling (Noah "Puck" Puckerman) and Ashley Fink (Lauren Zizes). A shock at elimination causes a lot of surprise and disappointment.

8. Believability

Jenna Ushkowitz is on hand in a challenge that appraises the contestants' ability to be believable. The group also performs 'The Only Exception'.

9. Generosity

Kevin McHale makes an appearance when the remaining players' generosity is assessed. In addition, the homework assignment of My Chemical Romance's 'Sing' is boosted by the arrival of surprise guests. This week's music video will a mash-up of 'Defying Gravity' and 'Lean on Me'.

10. Glee-ality

In the season finale, the final four contestants face-off to win their dream role on Glee.