Chuck a rusty blade over your shoulder and you’ll probably hit at least two people who have ripped off John Carpenter in recent times. The undisputed king of horror movie soundtracks has hit a late-career prolific streak, and Lost Themes III again shows how immersive and powerful his music can be, even when bereft of blood-drenched visual accompaniment. His increasingly intuitive comrades – son Cody Carpenter and godson Daniel Davies – help bring these devilishly simple musical ideas to life; the old master’s trademark blend of suppurating synths, macabre guitars and pulsing drum machines sounds as evocative and unnerving as it ever did. Cemetery and Dripping Blood are particularly stunning. It’s the sound of genius, lurking in the shadows.