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Eerie whistle of the Aztecs
Yes, this shard is actually a musical instrument. Although the name of his music can be very conditional. This unique device called whistle death. It was used by the Aztecs during the war, the festival honoring the dead and funeral ceremonies. That's just imagine: hundreds of soldiers on the battlefield and march dudyat in this thing. Atmosphere was still the same. And from the sound of whistles appropriate - like a wild muffled cry wounded privideniya.
Source: ribalych.ru/2014/12/05/zhutkaya-svistulka-actekov/