After laying silent for more than 17,000 years, an ancient instrument is heard again – a deep, plaintive bleat, like a foghorn from the distant past. When archaeologists realised that a large conch shell discovered in the Marsoulas cave in the Pyrenees had been modified thousands of years ago to serve as a wind instrument, they invited a French horn player to play the conch in a sound studio.  The horn produced clear C, C-sharp, and D notes.

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Conch shell in French museum found to be 17,000-year-old wind instrument ► https://www.theguardian.com/world/2021/feb/10/conch-shell-in-french-museum-found-to-be-17000-year-old-wind-instrument

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