The Good, the Bad and the Ugly (1966)

Ennio Morricone's spaghetti western masterwork featuring the iconic three-note whistle motif remains the most recognizable film score ever composed, with the "Ecstasy of Gold" sequence cited by 78% of film critics as the perfect marriage of music and cinema. This composition outperforms #1 Blade Runner by achieving 500 million global streams across platforms, a feat that surpasses the average score's reach by 200%. The 1966 score's 40% royalty share from library usage still leads all Western soundtracks.