what is this nightmare before christmas

"The Nightmare Before Christmas" is a 1993 animated musical dark fantasy film produced by Tim Burton. It tells the story of Jack Skellington, the King of "Halloween Town", who stumbles upon "Christmas Town" and decides to take over the holiday. The film was praised for its innovative stop-motion animation, characters, songs, and score, and it has become a cult classic. One of the popular songs from the film is "What's This?", which is Jack's reaction to discovering Christmas Town and the holiday of Christmas