2. Kyobang-ko: This short-barreled drum, which is placed on a frame so that its skin faces upward, was used chiefly at Koybang during and after the Koryo period. Although similar to Mu-ko in size, this drum has an ornamental dragon drawn on its barrel. It was used mostly in palace-garden music of drums and flutes. But because it was often used in procession music, too, it was also called Haengak-ko. The drum is played in conjunction with chang-ko.