The Imperial March was composed by John Williams for Star Wars: The Empire Strikes Back, released in 1980, as the musical theme for Darth Vader and the Galactic Empire. Its dark, marching rhythm quickly became shorthand for power and menace far beyond the films, appearing in trailers, parodies, sports entrances and countless online edits. Because almost everyone recognises it within seconds, creators still use it to signal a villain, an authority figure or an over-the-top entrance without needing any explanation.