@stfn@fedi.stfn.pl When I was an undergrad at the University of Michigan, I took a course in mideval Russian literature. A remarkably frail and very soft spoken professor said that when the Mongols swept the Steppes of Central Asia, they used a whistle called a "Be." It terrified the Cossack's horses, who would throw their riders and bolt. "...Then there was a great slaughter." I recall he said archeologists hadn't found an intact Be, and nobody knows what it sounds like. We are fortunate to have a working Carnyx.