The opening sequence to Sergio Leone's Once Upon a Time in the West comes to mind. Like some other examples mentioned here, there is no music. Instead, there is a kind of orchestration of natural sound elements. A fly, dripping water, and, oh man, that windmill! Fun stuff.

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The opening sequence to Sergio Leone's Once Upon a Time in the West comes to mind. Like some other examples mentioned here, there is no music. Instead, there is a kind of orchestration of natural sound elements. A fly, dripping water, and, oh man, that windmill! Fun stuff.