The theme was composed by Ennio Morricone for Sergio Leone's 1966 film The Good, the Bad and the Ugly, the third entry in the Dollars Trilogy starring Clint Eastwood. Its whistled motif, meant to mimic a coyote call, became one of the most quoted pieces of film music ever recorded and reached charts internationally as a single. Decades later the opening notes moved into trailers, adverts, sports broadcasts and online edits, where the first few seconds alone are enough to signal a showdown, a three-way standoff or a joke about good versus bad choices.