In William Shakespeare's Macbeth, the dagger moment comes from the famous soliloquy in which Macbeth asks if this is a dagger he sees before him, shortly before he murders King Duncan. Theatre and screen productions have long added a small sound cue to mark the apparition, helping separate the vision from reality. This ting version circulates online as a standalone clip from a production recording, shared by theatre students and editors who need a precise cue for hallucinations, omens and looming betrayals in parodies, essays and short dramatic edits.