This year NBC is celebrating “Wicked’s” 15th anniversary on Broadway. The network is throwing a Halloween party called “A Very Wicked Halloween: Celebrating 15 Years on Broadway,” and it will air on October 29th. The big event will feature songs from the musical hit “Wicked” with a long list of special guest stars. Most importantly, the celebration will reunite Tony Award winners Idina Menzel and Kristin Chenoweth, the original Elphaba and Glinda, who will perform and serve as hosts for the special.

Additional guest performers that have already been confirmed include Ariana Grande, Pentatonix, and the current Broadway company of “Wicked”. The musical is also making its way to the big-screen in 2020, “Wicked” will be distributed by Universal Pictures.

“‘Wicked’ is a blockbuster musical playing all over the world and still selling out night after night after 15 years on Broadway, and we’re thrilled to be partnering with Emmy and Tony-winning producer Marc Platt and the entire ‘Wicked’ team to celebrate the enduring success of this show,” said Doug Vaughan, Executive Vice President, Special Programs and Late Night, NBC Entertainment. “We’re especially excited to have Idina Menzel and Kristin Chenoweth reunited along with big guest stars in front of an audience – in costume hopefully – to help us celebrate the Halloween season.”

The show will tape at New York’s Marquis Theater and be produced by the original “Wicked” team, including the Tony- and Emmy-winning Marc Platt along with Emmy winners Glenn Weiss and Ricky Kirshner of White Cherry Entertainment. Weiss will also serve as director.

If you haven’t seen the award-winning musical yet, “Wicked” looks at what happened in the Land of Oz … but from a different angle. Long before Dorothy arrives, there is another young woman, born with emerald-green skin, who is smart, fiery, misunderstood and possessing an extraordinary talent. When she meets a bubbly blonde who is exceptionally popular, their initial rivalry turns into the unlikeliest of friendships … until the world decides to call one “good” and the other one “wicked.”

Hits from the musical include “Defying Gravity,” “Popular” and “For Good”. The show has won over 100 international awards, including a Grammy and three Tonys. The musical has been performed in more than 100 cities in 14 countries around the world and has already been translated into six languages and has amassed over $4.6 billion in global sales. The musical has been seen by more than 55M people.

Based on the novel by Gregory Maguire, “Wicked” has music and lyrics by Stephen Schwartz, and a book by Winnie Holzman. The production is directed by Tony winner Joe Mantello with musical staging by Tony winner Wayne Cilento. “Wicked” is produced by Marc Platt, Universal Stage Productions, The Araca Group, Jon B. Platt and David Stone.