The Hills Run Red (1966)

The Hills Run Red is a 1966 spaghetti western starring Henry Silva and Dan Duryea. Ennio Morricone does the music. Carlo Lizzani, who died this past October committing suicide at the age of 91, directs. This is a revenge story, worth seeing.

via youtube:

Fistful of Pasta recommends it. Spaghetti-Western.net praises the acting, the music, the plot, the dialog... and calls it "a must buy for any fan of the genre".