A Duma (Дума in Ukrainian) is an epic poem of 16th and 17th century CossackUkraine. Historically, dumas were recited by travelling kobzars and accompanied by the music of a kobza. In mathematics, see epic morphism. ... This article needs to be cleaned up to conform to a higher standard of quality. ... A kobzar (kобзар in Ukrainian) was a Ukrainian wandering bard of Cossack times, who played a stringed instrument called a kobza to accompany the recitation of epic dumas. ... Kobza (кобза) is a traditional Ukrainian stringed musical instrument, similar to a lute. ...