Bernard Herrmann composed this shrieking string motif for Alfred Hitchcock's 1960 film Psycho, where it accompanies the shower scene and has since become shorthand for cinematic horror. The cue was written for strings alone, with no other instruments, which helped its harsh, piercing tone stand out against the film's quieter moments. Over decades it has been parodied, sampled and reused in trailers, television, comedy sketches and online videos, often by people who have never seen the film. Its longevity comes from instant recognition: a few seconds are enough to tell an audience that danger, madness or a twist is coming.