 Klepacki took a brief hiatus to work on solo albums , then joined Petroglyph Games as full @-@ time audio director in 2004 . He prepared by becoming versed in the job 's requirements and demands . His first task was scoring Star Wars : Empire at War , Petroglyph 's launch title ; he also helped select voice actors . A die @-@ hard fan of the Star Wars franchise , Klepacki enjoyed complementing John Williams 's style as he worked with sound effects used in the feature films . He worked closely with programmers to ensure perfect aural functionality . Though most the game 's score is John Williams 's work , Klepacki estimates that he contributed 20 % original material . Apart from the main theme , he aimed to minimize his editing in order to retain the classic Star Wars sound . He chiefly composed for new areas of the Star Wars universe only found in Empire at War . He calls his work on the game " the peak of my career , " and felt he had spent his entire life grooming his abilities for that soundtrack . As a perk of composing , he visited Skywalker Ranch and Industrial Light and Magic , and took pride in having his name associated with an official Star Wars product . 
