A subtle "Special Edition" or "vanilla plus" version that adds bug fixes, replay value, extra functionality, content and atmosphere to the game, all while retaining that overall vanilla feeling, rather than the feeling of a vanilla game with various mini-mods tacked on as an afterthought.
This track is named "Protactinium", an original composition by myself, for the Call of Pripyat: Special Edition modification. I tried to give the soundtrack an overall 80s sci-fi/horror feel, inspired by John Carpenter's legendary style that IMO is more suited to the S.T.A.L.K.E.R. universe than the rock music it was shipped with.