FOX has been generous enough to give curious fans of “Glee” a sneak peek of the November 8 episode where the girls go against the guys in a mash-up battle. The storyline is rather familiar for they have done so in the first season when the girls combined “Halo” and “Walking on Sunshine”, and the guys blended “It’s My Life” and “Confessions Part II”.

Bon Jovi’s song appears again in this upcoming episode but it would be the girls’ showtime. In the sneak peek below, Rachel and her friends open with The Rolling Stones’ “Start Me Up” before slipping the “whoa-aaa” part of Bon Jovi’s “Livin’ on a Prayer”. A behind the scene is also released to reveal that the rehearsal for the particular clip did not always go smooth.

In the meantime, the boys would tone down the rock meter with a mash-up of The Supremes’ “Stop! In the Name of Love” and En Vogue’s “Free Your Mind”. Other songs which would be performed in the episode called “Never Been Kissed” are Bob Marley’s “One Love (People Get Ready)” which would be sung by Puck and Artie as well as Katy Perry’s “Teenage Dream” which is performed by Dalton Academy and has also been previewed.

Watch new promo of Glee Season 2

“Glee” was one of the most anticipated panels at San Diego Comic Con on Sunday, July 25 proven from the number of screaming fans and the length of signing queue. Chris Colfer, Amber Riley, Jenna Ushkowitz, Kevin McHale and their co-stars served the Gleeks with bits and pieces from the second season, including some spoilers.

The first thing discussed was the romance between Tina and Artie which will be no more in season 2. In fact, it will be a love triangle as Mike Chang steps in. Talking more generally about the new season, creator Ryan Murphy said, “People think we’re going to get bigger next season, but we’re going in a different direction.” This means less musical numbers and more story. “We’re doing about five music numbers per episode instead of eight,” he confirmed.

The Britney Spears episode was also discussed. Airing in September, it is called “Britney/Brittany” and will feature six songs. Since Matthew Morrison expressed his objection in having the Britney theme, his character Will Schuester will also be against the idea. As for whether Justin Timberlake would come over, Murphy said “no” although they are always open for the idea of him being Will’s younger brother.

The biggest scoop delivered at the panel is the fact that they will do a Rocky Horror Picture Show-themed episode. Colfer who plays Kurt said that he is looking forward to sing “Time Wrap” which is the theme song to the show. Later after the panel ended, the cast walked out of the podium with the original song played.

Some of the confirmed songs have something to do with religion like “Losing My Religion” and “Papa, Can You Hear Me?”. This correlates to the storyline when Mercedes brings Kurt to her church. Speaking about Kurt, Murphy who is openly gay said, “I wanted Kurt to have the high school experience that I didn’t have. I want him to have a boyfriend and for them to be prom king and king. I think that’s something important to put out into the world.”

Before the panel was wrapped, it was confirmed that Idina Menzel and Kristin Chenoweth will return as Rachel’s mom and April respectively. That said, Murphy is hoping to shed some light on Rachel’s two gay dads.

“Glee” returns September 21 on FOX.

“Glee” cast at signings: