Also, the big question is: will Charice sing?
Spoilers of the episode's song list had been out and out of the 5 songs, there's no mention of the Filipina singer.
Here are the songs:
“Kiss” by Prince sung by Holly and Will
“Do You Want to Touch Me” by Joan Jett sung by Holly and New Directions
“Afternoon Delight” by Starland Vocal Band sung by Carl, Rachel, Puck, and Quinn
“Landslide” by Steve Nicks sung by Holly, Brittany, and Santana
“Animal” by Neon Trees sung by Dalton Academy Warblers
And here's Do You Want to Touch Me sung by Gwyneth. In advance.