Stary Olsa performs medieval, Renaissance, and early baroque music from the Grand Duchy of Lithuania and western Europe. They use only period instruments (painstakingly handcrafted from historically accurate materials), such as cistra, Baltic psaltery, shawms, rebec, and Belarusian bagpipe. They sing in Belarusian. The band has received numerous positive critical reviews.
The group is on a tour of the U.S. this fall.