Amazing whistle language

This is a great way for these Turkish people to communicate across the hills and valleys of their community. It’s also a great idea for a covert language. Imagine if you and your family, neighbors, community had a few such whistles for when the SHTF? It would be a highly effective secret language for alerts and warnings.

The first video is a German documentary with subtitles but it does not have the irritating background music of the second version, which is in English.