Snow was tasked with composing the score for both "The X-Files" films. The films marked the first appearance of real orchestral instruments; previous music had been crafted by Snow using digitally sampled instrument sounds. Snow's soundtrack for the first film, ', was released in 1998. For the second film, Snow recorded with the Hollywood Studio Symphony in May 2008 at the Newman Scoring Stage at 20th Century Fox in Century City. UNKLE recorded a new version of the theme music for the end credits. Some of the unusual sounds were created by a variation of silly putty and dimes tucked into piano strings. Snow commented that the fast percussion featured in some tracks was inspired by the track "Prospectors Quartet" from the "There Will Be Blood" soundtrack. The soundtrack score, ', was released in 2008.