<P>--Heyman, on the underwater scenes </P> <P> As in the previous instalments, Stuart Craig and Stephenie McMillan provided the film's art and set designs, respectively . Due to the film's scope, there were many new sets and transformations of old sets created . McMillan was most excited about redesigning the Great Hall for the scenes involving the Yule Ball . "Originally we thought silver curtains, silver table cloths and an ice dance floor," said McMillan, "but it just went on and on . The drapes man eventually said,' Why not just stick the fabrics on the wall?"' Each task of the Triwizard Tournament required massive sets . The rock quarry set for the first task, where Harry faces off with the Hungarian Horntail, was built in two sections at Leavesden Studios . Craig called it "one of the biggest sets we've ever built for any of the films ." For the second task, involving the film's underwater scenes, the film crew designed and built a blue screen tank holding "about half a million gallons of water ." As for the final task, which took place in the maze, hedge walls ranging from 20 to 40 feet tall were constructed and enhanced with computer - generated imagery . </P> <P> John Williams, who had scored the first three Harry Potter films, could not return for the fourth instalment due to a busy 2005 schedule . Patrick Doyle, who had worked with Newell in Into the West and Donnie Brasco, replaced him as composer . The initial request was that Doyle would be working with Williams' material, but eventually only "Hedwig's Theme", the leitmotif of the series, remained from the previous scores . Pulp lead singer Jarvis Cocker, who was even rumoured to score the film, was one of the musicians invited by Doyle, with whom he had worked in the Great Expectations soundtrack, to write a song for a wizard rock band . Once Doyle chose Cocker's composition, he and other British musicians such as Jonny Greenwood and Phil Selway of Radiohead were picked to play the fictional band, both performing songs for the soundtrack and having cameo roles in the film . </P> <P> With the Goblet of Fire novel almost twice the length of Prisoner of Azkaban, the writers and producers reduced certain scenes and concepts to make the transition from page to screen . Director Mike Newell described the problem as one of "compressing a huge book into the compass of a movie". This was achieved by "putting aside" all the components of the novel which did not directly relate to Harry and his journey . </P>

When did yhe first harry potter movie come out