Ennio Morricone became a movie legend by using 'low-brow' folk instruments in high-stakes Westerns. In 'A Fistful of Dollars,' he prominently featured the Jaw Harp (also known as the Jew's Harp). The instrument consists of a small metal frame held against the teeth, with a metal reed that is plucked. By changing the shape of their mouth, the player alters the pitch. This 'boing' sound became the sonic signature of the Spaghetti Western, providing a gritty, unconventional atmosphere for Clint Eastwood's legendary character. Morricone’s use of the Jaw Harp broke the Hollywood mold of using symphonic orchestras for Westerns, proving that simple, quirky instruments can create a cinematic legend that defines an entire genre for decades.