The sound comes from Five Nights at Freddy's, the 2014 horror game that made simple audio cues instantly recognizable to players. The music box style cue became closely associated with the series' tense camera-checking atmosphere and looming danger. Online, it spread through FNAF compilations, lore videos, gameplay edits and short horror memes. It still gets reused because just a moment of that tune is enough to make viewers think of animatronics, dark hallways and the threat of a sudden FNAF jumpscare scream.