 In 1994 , Klepacki met with Westwood Studios developers to discuss the soundtrack of the company 's next project — Command & Conquer . To define the game 's style , Klepacki listened to a number of bands , including Nine Inch Nails and Ministry , which would supply the iconic industrial style found in the majority of the songs . He combined various elements of this music and added his own touch to create a unique sound . With the company 's recent shift to 22 kHz audio , Klepacki composed with an ASR @-@ 10 sampler , a Roland S760 sampler , a Roland JD 990 synth module , and an electric guitar . The first few songs he composed for Command & Conquer contained voice samples — including the notable pieces Act on Instinct and No Mercy ( which featured wild declarations from Bill & Ted 's Bogus Journey ) . The samples were later found to interfere with the game 's spoken audio , and were replaced with versions lacking the voices , although the original versions ( and several other unused pieces ) can still be found on the DOS C & C and Covert Operations discs . Complete versions of the songs later appeared on the game 's commercial soundtrack . He would continue to sample clips from film and other media throughout his career , using a quote from The Brain from Planet Arous in the Yuri song Brainfreeze , for example . Klepacki next composed instrumental pieces for Command & Conquer , drawing influences from orchestral , house , heavy metal , and hip hop music . For the credits , Klepacki wrote Airstrike , featuring a hook later used in Command & Conquer : Tiberian Sun for the Global Defense Initiative . Conversely , the Brotherhood of Nod ending used the song Destructible Times written by Klepacki 's local band , I AM . Developers requested the song because it " reflected the war aspect and bad @-@ ass vibe of Nod 's side . " The C & C expansion pack The Covert Operations featured seven new ambient pieces , all of which were also included on the disc in high quality CD Audio format . Though the soundtrack was not released through retail , Westwood sold it by special order through its website and in game catalogues . 
