The 12 finalist perform Katy Perry's "Firework"' for individuality week; a contender will get one-on-one time with Darren Criss.

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

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

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

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

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

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.

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

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'.

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

Individuality is the theme for the first episode of season 2 of The Glee Project. Lea Michele (Rachelle Barry in Glee) watches the 14 contestants perform Born This Way by Lady Gaga, as each contestant demonstrates their individuality. Lea chooses her favorite for a mentoring session, while everybody lays down vocals in the studio, learns choreography, and then films a music video for the song Here I Go Again by Whitesnake. The contestants deemed to be the bottom 3 have to do a last chance performance for Ryan Murphy.

Season one winner Samuel Larsen (Joseph on Glee) guest mentors “Dance-ability” week. A passionate kiss spurs jealousy as the group performs LMFAO’s “Party Rock Anthem".

For Vulnerability week Corey Monteith (Finn Hudson in Glee) guest mentors as the contestants perform the homework assignment: My Life Would Suck Without You by Kelly Clarkson, then the contestants film a music video for Everybody Hurts by REM.

Sexuality week. Naya Rivera (Santana on Glee) guest mentors as the contestants perform their homework assignment song: I Wanna Sex You Up by Colour Me Badd, then film a music video for a song mash up of Moves Like Jagger by Maroon 5 and Milkshake by Kelis.

Adaptability week. Kevin McHale guest mentors as the contestants perform their homework assignment song: You Outta Know by Alanis Morrisette, then film a music video for Price Tag by Jessie J.

Fearlessness week. Jane Lynch (Sue Sylvester on Glee) guest mentors as the contestants perform their homework assignment: Now That We Found Love by Heavy D & The Boyz, then they film a music video for the song mash up of Hit Me With Your Best Shot by Pat Benatar and One Way Or Another by Blondie.

Theatricality week. Grant Gustin (Sebastian Smythe on Glee) guest mentors as the contestants perform their homework assignment of I Hope I Get It from A Chorus Line, then film a music video for When I Grow Up by The Pussycat Dolls.

Tenacity Week. Amber Riley (Mercedes Jones on Glee) guest mentors as the contestants perform their homework assignment: Survivor by Destiny's Child. The contestants then have to show their tenacity by filming a physically demanding shoot in one take for a music video of Eye Of The Tiger by Survivor.

Darren Criss (Blaine on Glee) guest mentors “Romanticality” week. The 6 contestants break into 3 couples to perform the homework assignment: singing More Than Words by Extreme, then form another 3 couples for the music video: We Found Love by Rihanna.

Actability Week. Dianna Agron (Quinn on Glee) is guest mentor as the 5 remaining contestants perform their homework assignment: Addicted To Love by Robert Palmer. Afterwards the contestants show their acting skills by improvising scenes for a fictitious movie trailer, then give a last chance performance for Ryan Murphy and the writing crew of Glee.

Glee-ality! The final episode of Season 2. Chris Kolfer (Kurt Hummel on Glee) guest mentors as the last remaining contestants are joined by some special guests to perform their homework assignment: You Can't Stop The Beat from Hairspray. They then film a high school prom themed music video for Tonight Tonight by Hot Chelle Rae before performing their final last chance performances of their own song choices for Ryan Murphy, the writers and several cast members of Glee, and the previously eliminated contestants. Ryan Murphy then selects the winner of The Glee Project season 2. Wooo!