This is a large bell percussion instrument which plays the first note of the scale of twelve in the Eastern music, and is hung on its own on a frame. Sound is made by striking the round part of the lower front of the bell with an ox-horn mallet. Introduced from Song dynasty of China in 1116, 11th year of King Yejong’s reign of Goryeo dynasty, it was used in various court and ritual music in Joseon period.