Apocalypse Now's opening scene immediately sets up the lush sound design: We start off looking at a silent, tropical field. Then comes the distant whir of choppers. Then a tambourine. Slowly, "The End" by the Doors edges into clarity. The noise of the choppers builds alongside the vocals of Jim Morrison. They crash on top of each other as the viewer watches a field in Vietnam get bombed. The screen sets on fire, then Morrison's voice sings: "This is the end." Apocalypse Now Final Cut, along with being remastered in 4K Ultra HD, has made its sound even more impressive. In collaboration with Meyer Sound Laboratories, Coppola's film company American Zoetrope has developed what they're calling "Sensual Sound." Hailed as a "breakthrough" by Meyer Sound, Sensual Sound creates an infrasonic, ultra-low frequency impact that hits audiences in the gut. It apparently emits noises that reach viewers on a deeper physical level, making Apocalypse Now's helicopters, spears, and bombs feel like an immediate threat.