Scientists were fascinated by the ghostly find: a human skeleton buried in an Aztec temple with a clay, skull-shaped whistle in each bony hand.
But no one blew into the noisemakers for nearly 15 years. When someone finally did, the shrill, windy screech made the spine tingle.If death had a sound, this was it.
Roberto Velazquez believes the Aztecs played this mournful wail from the so-called Whistles of Death before they were sacrificed to the gods.
The 66-year-old mechanical engineer has devoted his career to recreating the sounds of his pre-Columbian ancestors, producing hundreds of replicas of whistles, flutes and wind instruments unearthed in Mexico's ruins.
Velazquez is part of a growing field of study that includes archaeologists, musicians and historians. Medical doctors are interested too, believing the Aztecs may have used sound to treat illnesses.
The modern-day archaeologists who came up with the term Whistles of Death believe they were meant to help the deceased journey into the underworld, while tribes are said to have emitted terrifying sounds to fend off enemies, much like high-tech crowd-control devices available today.
Experts also believe pre-Columbian tribes used some of the instruments to send the human brain into a dream state and treat certain illnesses. The ancient whistles could guide research into how rhythmic sounds alter heart rates and states of consciousness.
Among Velazquez's replicas are those that emit a strange cacophony so strong that their frequency nears the maximum range of human hearing.
Chronicles by Spanish priests from the 1500s described the Aztec and Mayan sounds as sad and doleful, although these may have been only what was played in their presence.
In our Ein Hod "Always Open" pottery we make ocarinas for live people.
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