A birbynė is a Lithuanianaerophone that can be either single or double-reeded and may or may not have a mouthpiece. Birbynė can be made of a variety materials: wood, bark, horn, straw, goose feather, etc. The earliest and simplest examples were used by children as playtoys and by shepherds as a tool to control the herd. In the 19th century, influenced by classical instruments and especially the clarinet, birbynė evolved into a serious musical instrument used in assembles. Modern birbynės are made of wood with bells of horn and usually have ten tone holes. They are divided into three categories: soprano, tenor, and contrabass.