▁actual ▁film , ▁and ▁appeared ▁only ▁in ▁black - and - white . ▁ ▁Director ▁Robert ▁W ise ▁had ▁to ▁obtain ▁special ▁permission ▁for ▁putting ▁the ▁main ▁title ▁cred its ▁at ▁the ▁end ▁of ▁the ▁film . ▁ ▁Initial ly ▁there ▁were ▁no ▁cast ▁of ▁characters ▁cred its ▁which ▁would ▁typically ▁come ▁at ▁the ▁end ▁because ▁( like ▁Fant asia ▁and ▁Ap ocal yp se ▁Now ) ▁a ▁special ▁program ▁was ▁to ▁be ▁given ▁to ▁the ▁audience . ▁ ▁However ▁at ▁the ▁last ▁minute , ▁a ▁cast ▁of ▁characters ▁roll ▁was ▁added . ▁ ▁Because ▁of ▁its ▁late ▁inclusion , ▁it ▁was ▁not ▁scored , ▁a ▁detail ▁that ▁was ▁corrected ▁for ▁the ▁first ▁las erd isc ▁and ▁V HS ▁release ▁after ▁consult ing ▁with ▁the ▁producer ▁and ▁director . ▁ ▁The ▁music ▁used ▁came ▁from ▁the ▁instrument al ▁bridge ▁and ▁second ▁verse ▁of ▁the ▁title ▁song ▁as ▁originally ▁released ▁on ▁a ▁ 4 5 R PM ▁single ▁record . ▁ ▁After ▁the ▁complete ▁version ▁had ▁been ▁un seen ▁and ▁thought ▁lost ▁for ▁nearly ▁ 2 0 ▁years , ▁the ▁r ental ▁library ▁Films , ▁Inc . ▁had ▁a ▁new ▁ 3 5 mm ▁mon o ▁print ▁struck ▁in ▁the ▁late ▁ 8 0 s . ▁ ▁N umer ous ▁screen ings ▁on ▁the ▁rev ival ▁theatre ▁circuit , ▁a ▁two - part ▁article ▁in ▁a ▁movie ▁collect or ▁newspaper , ▁and ▁a ▁world wide ▁letter ▁writing ▁campaign ▁by ▁fans , ▁were ▁followed ▁by ▁an ▁article ▁in ▁Prem iere ▁Magazine , ▁an ▁acc laimed