Ernest Medina was court martialed in 1971.
The Don Cossacks Choir Russia -LRB- Хор Донских казаков России , 1992 -RRB- is a Russian folk choir of returned exiles and native Russian cossacks led by the Dutch conductor Marcel Verhoeff -LRB- Russian ; Марсель Верхуфф -RRB- .. Marcel Verhoeff. Marcel Verhoeff. The choir takes inspiration from the Don Cossack Choir of Serge Jaroff -LRB- 1921 -RRB- which continues to exist independently outside Russia .. Don Cossack Choir. Don Cossack Choir. Serge Jaroff. Serge Jaroff. The new choir was formed when , following the Gorbachev era , changes in Russia allowed both exiled cossacks to come home and also native Russian cossacks to reassert their traditions .