Which 1968 Spaghetti Western features a harmonica-playing gunman?

Which 1968 Spaghetti Western features a harmonica-playing gunman? The answer is Once Upon a Time in the West.

Directed by Sergio Leone, the film centers on a mysterious harmonica-playing gunman known only as Harmonica, played by Charles Bronson. He arrives in the American West while railroad tycoon Morton and the brutal outlaw Frank compete for control of land and the future rail route. Claudia Cardinale plays Jill McBain, whose arrival at a remote homestead draws the main characters together.

The harmonica is more than a character detail: it is tied to Harmonica’s traumatic past and becomes a recurring musical and narrative clue. Ennio Morricone composed the score before filming, allowing Leone to stage several scenes around the music. The film is celebrated for transforming familiar Western archetypes into a sweeping, elegiac story about the end of the frontier.

The other options are also European Westerns, which makes this question easy to confuse. The Big Gundown, Django, and The Great Silence feature memorable gunfighters, but none is identified by the distinctive harmonica-playing protagonist in this 1968 Leone film.