- Since I'm riffing on a Medieval theme this week, I thought I'd share another video by a band I really like from Belarus. "Stary Olsa is a Belarusian medieval folk band. They play medieval Belarusian music of the Grand Duchy of Lithuania. Stary Olsa is one of the few Belarusian bands enjoying popularity outside Belarus." They also do some awesome covers of rock tunes like Deep Purple's - "Child In Time" and this one: