The name joins Contra and intro together, pointing to the opening music cue from the long-running run-and-gun series best known for its demanding side-scrolling shooter action. Short title and level cues like this became memorable because players heard them repeatedly before every attempt, so a few seconds is enough to trigger recognition. As retro clips circulated on soundboards and in short edits, the jingle took on a second life as a standalone start signal. Creators now reuse it whenever they want a playful, old-school sense of a mission beginning.