The screeching strings come from Bernard Herrmann's score for Alfred Hitchcock's Psycho, released in 1960, and are most associated with the film's famous shower scene. Herrmann used only strings for the score, and the violent, stabbing violin figures became shorthand for murder and sudden terror in popular culture. The cue has been sampled, parodied and quoted in countless films, trailers and television shows, and later spread online as a short meme sound. Editors still use it because audiences recognise the danger signal instantly, even without seeing the film.