▁unusual ▁sounds ▁by ▁manip ulating ▁real - world ▁sounds , ▁Director ▁S lava ▁T su k erman ▁chose ▁to ▁use ▁a ▁synth es izer ▁known ▁as ▁the ▁Fair light ▁C MI . ▁Br enda ▁H utch inson ▁and ▁C live ▁Smith ▁were ▁the ▁music ▁compos ers ▁for ▁the ▁sound track . ▁▁ ▁During ▁the ▁process , ▁the ▁director ▁brought ▁over ▁three ▁or ▁four ▁classical ▁music ▁pieces ▁that ▁would ▁be ▁program med ▁into ▁the ▁Fair light ▁C MI . ▁Much ▁like ▁a ▁computer , ▁every ▁sound ▁and ▁every ▁note ▁would ▁be ▁program med ▁with ▁a ▁code . ▁When ▁compos ing , ▁the ▁director ▁would ▁tap ▁a ▁rh ythm ▁or ▁hum ▁a ▁mel ody ▁and ▁the ▁music ▁compos ers ▁would ▁play ▁around ▁with ▁ideas ▁on ▁the ▁Fair light . ▁Per cussion ▁sounds ▁were ▁used ▁throughout ▁the ▁movie . ▁The ▁director ▁often ▁rejected ▁re - rec ording ▁a ▁t ape ▁when ▁not ▁perfect , ▁lov ing ▁the ▁ra wn ess ▁of ▁the ▁imper fe ctions . ▁Director ▁S lava ▁T su k erman ▁was ▁quoted ▁saying ▁“ No , ▁I ▁like ▁it . ▁Let ’ s ▁make ▁it ▁quick ▁and ▁dirty .” ▁During ▁fo ley ▁and ▁sound ▁design , ▁materials ▁such ▁as ▁wind ▁ch imes , ▁metal , ▁glass , ▁and ▁wood ▁were ▁used ▁to ▁create ▁the ▁sounds ▁of ▁the ▁al ien ▁cre atures . ▁During ▁much ▁of ▁compos ing , ▁C live ▁Smith ▁never ▁even ▁saw ▁a ▁visual ▁from ▁the ▁film ▁to ▁work ▁with . ▁It ▁wasn ' t ▁until ▁the ▁premi ere ▁where ▁he