the Black Cauldron. Even with a Disney spin, this movie earned a PG rating from the MPAA. The first PG rating for Disney's animated division. And audiences were not quite as willing to embrace that darker vision.
Very loosely based on the Chronicles of Prydain series by Lloyd Alexander, the movie bombed at the box office. I personally think it's one of the better movies from the mid-80s that Disney put out. It's not a musical, although there are elements of music throughout. It's a little rough around the edges, but I like the dark tone of the film. The creepiness. For fans of animation, this is a must-see film.
You can see a clip on youtube here: http://youtu.be/OlT3XbfU6e8