Donskoy ryley explained

The Donskoy ryley (ru|Донской рылей) is a stringed musical instrument from Russia. It is a type of hurdy-gurdy, where the strings are constantly bowed by a wheel which is turned using a crank, and the pitch of the strings changed by keys attached to sliding tangents.^{[1] [2] [3] [4] [5]}

Notes and References

1. http://barynya.com/sale.stm http://www.barynya.com
2. https://2009.kaz-krug.ru/home/uchastniki.html Участники Казачьего Круга
3. https://hurdygurdyweekly.blo gspot.com/2014/10/russian-vocal-w-gurdy-donskoy-ryley.html Hurdy Gurdy weekly
4. https://baroquemusic.ru/encyclopedia/instruments/kolyosnaya-lira Музыка Барокко
5. https://stringedinstrumentdatabase.aornis.com/d.htm The Stringed Instrument Database :D