difficulty with the regiment were placed in a separate group that ran across the floor and attacked Veruca's stunt double. For the shots where the rodents would be in close interaction with Veruca, CG squirrels designed by Framestore CFC were implemented. Several shots called for a hundred animated squirrels, while close-up models required five million computer-generated hairs to look realistic. Animatronic squirrels were also used in the background of shots where a live squirrel would be performing the shelling routine. Several challenges emerged during filming. The delicate landscape of the Chocolate Room posed a challenge for the crew, with cinematographer Philippe Rousselot recalling that "the set was very impractical for shooting because it was all curves and extraordinarily fragile—as soon as you stepped onto the grass, you destroyed it." Rousselot instead utilized a cable-suspended camera system known as Cablecam. On one occasion, the camera was improperly secured to the system and subsequently plunged into the faux chocolate river, destroying the $540,000 camera and delaying production. Another hurdle during filming was the existence of British Equity rules, which state that children can only work four and a half hours a day. Filming for Charlie and the Chocolate Factory took six months, ending in December 2004. Despite these challenges, Burton claimed production ended ahead of schedule. Music Danny Elfman, similar to Tim Burton, had no emotional attachment to 1971's Willy Wonka & the Chocolate Factory. According to Elfman, "I had no trouble divorcing myself from those [original] songs. I've dealt with that a couple of times. You know you're dealing with something that's going to make a lot of people angry, and you just can't think about it." Because the Oompa-Loompa musical numbers would require complex choreography and be shot on set, Elfman had to compose those songs before filming began. Elfman also composed the songs simultaneously alongside the music from Corpse Bride. It was decided at an early stage that Elfman would be providing the vocals for all the Oompa-Loompas, a decision justified by the identical nature of the Oompa-Loompas, with pitch changes and modulations to represent different singers. Charlie and the Chocolate Factory marks the first time since 1993's The Nightmare Before Christmas that Elfman contributed to a film score using written songs and his vocals. The first song composed was "Augustus Gloop", being done as a Bollywood spectacle per Deep Roy's suggestion. Elfman recounted, "my original approach was to