An amateur archaeologist, Roberto Velazquez, has discovered the sound of Aztec musical instruments used in ancient sacrificial rites.  Until recently, the archaeological community had dismissed these pottery pieces as children’s toys, but according to Velazquez, they seem to have played a very important role in the ritual life of the Aztec peoples.  Some of the whistle-like instruments sound like a banshee, others like frogs and jaguars.  Still others have specific pitches and can play melodies. 

http://www.cnn.com/2008/TECH/science/06/30/pre-columbiansounds.ap/index.html#cnnSTCOther1

 

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The “death whistle” sounds to me a lot like the flute section on the first day of beginning band class.

Modern-day death whistle