Clint Eastwood in the 1960s and Pam. Filming began at the Cinecittà studio in Rome in mid-May 1966, including the opening scene between Clint and Wallach, when The Man With No Name captures Tuco for the first time and sends him to jail. The production then moved on to Spain's plateau region, near Burgos in the north, which would double for the extreme deep south of the United States. The western scenes were again shot in Almeria in the south. This time, the production required more elaborate sets, including a town under cannon fire, an extensive prison camp and an American Civil War battlefield. For
Yodeling of early Western films, popularized by many of the B-movies of the 1930s and 1940s. The transformation of Rodgers' blue yodel to the cowboy yodel involved a change in both rhythm and a move away from Southern blues-type lyrics. Some yodels contained more of the Alpine type of yodel as well. Most famous of the singing cowboy film stars were Roy Rogers and Gene Autry, both accomplished yodlers. The popularity of yodeling lasted through the 1940s, but by the 1950s it became rare to hear yodeling in country and western music. Most experts agree that yodeling was used in the