how long did nightmare before christmas take

The film took two years to make, from the writing and conceptualization stage to the final editing and post-production. The majority of the film was created using traditional hand-drawn animation techniques, which required significant time and effort to create the stunning visuals. The filmmakers also incorporated computer-generated effects and animation to bring certain elements of the story to life, such as the eerie and macabre world of Halloween Town. The result is a visually stunning and memorable film that has become a Halloween classic.