Horror genre backwards detuned piano chords and echoed percussion across a malevolent, dissonant, instrumental background.

Sounds like: lost soul, dead person, ghosts, graveyard, Halloween, apparition, bogey man, spirit, death, haunt, haunting, phantasm, phantom, poltergeist, shadow, spectre, spirit spook, sprite, vision, wraith, demon, vampire, zombie, devil, ghoul, imp, evil, spirit, troll, monster, ogre, dire, direful, dread, dreadful, fearsome, forbidding, formidable, frightening, frightful, ghastly, hair-raising, horrendous, horrible, horrifying, intimidating, redoubtable, fearful, shocking, spine-chilling, terrible, terrifying, disconcerting, discouraging, dismaying, disquieting, distressing, disturbing, perturbing, startling, threatening, troubling, trying, unnerving; bone-chilling, creepy, eerie, weird; appalling, atrocious, awful, grisly, gruesome, hideous, horrid, macabre, monstrous, nightmarish, nightmare, scared, tremulous, jittery, jumpy, spooky; anxious, apprehensive, nervous; afraid, alarmed, horrified, panicked, panicky, panic-stricken, scared, shocked, spooked, startled, terrified, terrorized, unnerved, witch, witchcraft, atrociousness, atrocity, awfulness, dreadfulness, frightfulness, ghastliness, gruesome, hideousness, horridness, monstrosity, repulsiveness, badness, baseness, depraved, depravity, diabolical, evil, heinousness, immorality, iniquity, sinful, sin, vile, wicked, accursed, cursed, creepiness, eeriness, fearful, fearsome, scariness, torture, dark, demonic, exorcist, danger, alarm, presence, threat, anxiety, dread, fearfulness, fright, fear, panic, scare, terror, trepidation, phobia; creeps, jitters, nervousness, willies; pang, qualm, twinge; agitation, apprehension, consternation, discomposure, disquiet, concern, dismay, worry, steven king, horror-genre, horror music, horror films, ambient, atmosphere, horror trailer, background, bed, chase, cinematic, drone, dark, drama, dramatic, epic, end credits, forest, game, groan, halloween party, trick or treat, pumpkin, intro, impact, jump, scare, killing, murder, doll, creepy, flesh, movie trailer, night, midnight, haunted house, noises, suspense, theme, thriller, tension, underscore, dead, dark, darkness.