Halloween special celebrating the 15th anniversary of the hit musical Wicked with select performances by special guests. To celebrate the 15th anniversary of "Wicked" on Broadway in October, NBC threw a joyous Halloween party for the ages. This televised concert featuring songs from the blockbuster musical hit "Wicked" showcased a cavalcade of special guest stars to help celebrate the music and the magic of the show that tells the story of what happened in Oz before Dorothy dropped in. "A Very Wicked Halloween: Celebrating 15 Years on Broadway" reunited Tony Award winners Idina Menzel and Kristin Chenoweth, the original Elphaba and Glinda, who performed and served as hosts for the special. Additional guest performers included global music superstar Ariana Grande, multi-platinum recording artists Pentatonix, the current Broadway company of "Wicked" and more, all to honor the show's lasting cultural impact and the 15th anniversary of its unforgettable Broadway debut. Filmed at New York's Marquis Theater and 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, with Weiss will also serving as director.