Idina Menzel and Kristin Chenoweth together for a ‘Wicked’ concert.

NEW YORK - JUNE 6: (HOLLYWOOD REPORTER OUT) American singers and actresses Idina Menzel (left) and Kristin Chenoweth of "Wicked" perform on stage during the "58th Annual Tony Awards" at Radio City Music Hall on June 6, 2004 in New York City. The Tony Awards are presented by the League of American Theatres and Producers and the American Theatre Wing. (Photo by Frank Micelotta/Getty Images)

Something wicked this way comes: NBC is airing a Halloween concert special timed to the 15th anniversary of hit Broadway musical “Wicked.” The show’s original Elphaba and Glinda, Idina Menzel and Kristin Chenoweth, will host the broadcast-TV special.