According to Idina Menzel's official website, the characters Rachel (played by Lea Michele) and Kurt (played by Chris Colfer) will belt out
Wicked's Act One closer, "Defying Gravity." Menzel, of course,
created the role of Elphaba in Wicked and was the first to debut "Defying" on Broadway.
"Glee," the music-filled series about a high school glee club, airs 8 PM ET Wednesdays FOX.