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This Aztec Whistle Is One Of The Scariest Sounds You'll Ever Hear

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How scary is the sound of an Aztec death whistle? - Boing Boing

Aztec Death Whistles - Screaming Aztec Death Whistles from our shop.

The most terrifying sound in the world — Aztec Death Whistle

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The Scariest Sound In The World

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Listen to the 'scariest sound in the world': Scientists recreate the noise of the Aztec Death Whistle that may have accompanied human sacrifices