After decades of languishing in the cryptic haze of shabby bootlegs, the soundtrack to Roger Watkins’ sleazy horror magnum opus ‘Last House on Dead End Street’ (1977) is finally achieving the grand debut it deserves. Comprised entirely of tracks from the legendary KPM Music Library, the soundtrack is a unique blend of haunting experimental terror electronics – the pure atmospheric embodiment of the film’s oppressive ominous vibe. Since none of the music is credited in the film, it has taken year…