First Look at Idina Menzel, Kristin Chenoweth, Ariana Grande, and More in A Very Wicked Halloween

The TV special, celebrating 15 years of the musical phenomenon, will air October 29.

Original Wicked stars Idina Menzel and Kristin Chenoweth reunited to host and perform during NBC's A Very Wicked Halloween: Celebrating 15 Years on Broadway. The special event will air October 29 (the eve of the musical juggernaut's anniversary) at 10 PM. Performing alongside the pair of Tony winners will be pop star and Broadway alum Ariana Grande (a noted Wicked superfan), the a cappella group Pentatonix, the current Broadway cast of the musical (led by Jessica Vosk and Amanda Jane Cooper), Adam Lambert, and Ledisi. Watch: JESSICA VOSK OPENS UP ABOUT WICKED CAREER CHANGE A Very Wicked Halloween was taped at the Marquis Theatre with a live audience. Wicked producer Marc Platt produces the show with Glenn Weiss (who also directs) and Ricky Kirshner of White Cherry Entertainment. The musical, featuring a score by Stephen Schwartz and a book by Winnie Holzman, opened at the Gershwin Theatre in 2003 and has gone on to play over 100 cities in 14 countries. The producing team includes Platt, David Stone, and NBC sister organization Universal Stage Productions. Flip through photos of the special event below:

First Look at Idina Menzel, Kristin Chenoweth, Ariana Grande, and More in A Very Wicked Halloween First Look at Idina Menzel, Kristin Chenoweth, Ariana Grande, and More in A Very Wicked Halloween 22 PHOTOS