Korea traditional instruments

So This wind instrument, sometimes called pongso or paeso, is similar to Western panpipes, which consist of a set of tubes (usually seven), graduated in size and blown from the top. The Korean so has 16 tubes. Images of triangular so are found in tomb murals dating to the mid-fourth century.   Tanso This small notched vertical flute has five finger holes and a thumb hole on the back. It is not mentioned in the late 15th-century Guide to the Study of Music or in other musicology texts from the mid-Chos n Dynasty. Musicologists, therefore, believe that it was developed from a larger flute toward the end of that dynasty.   Hyangp'iri As in the Western oboe, the sound from this instrument comes from a vibrating reed. During the Kogury Kingdom (37 B.C.-A.D. 668), there were several kinds, but only two have been used since the Kory Dynasty. This instrument has a rather dark tone, but because of its poetic quality, it carries the main melody in many traditional musical pieces.     Taep'yongso The taep'yongso is made of wood and has a metal mouthpiece and cup-like bell. It has eight finger holes, seven in front and one thumb hole in back. It has a shrill piercing sound. Originally it was used only in military music and royal ancestral rite music , but more recently it has been introduced into various types of traditional musical including farmers' music and Buddhist ritual music.   Saenghwang This instrument dates to the Three Kingdoms period, 1st century B.C.-A.D. 7th century. It is a mouth organ having a sound box once made from gourd but now made of metal or wood, seventeen bamboo pipes, and a set of metal reeds at the base of these pipes. The musician creates sounds by breathing in and out of the instrument, thus causing the metal reeds to vibrate.   Haegum This is a nasal-toned two-string fiddle thought to have been introduced from China during the Kory Dynasty. It plays a key role in wind and string ensembles and as an accompaniment to dance performances. The sound results from running a horsehair bow over the strings. According to the 15th-century Guide to the Study of Music, its strings were not manipulated, but in later years, musicians pulled the strings with their left hand, thus creating a more varied sound.   Komun'go This six-string zither originated during the Kogury Kingdom (37 B.C.-A.D. 668). Most string instruments without bows are plucked or hit with the fingers, but this one is played with a short bamboo rod held in the right hand. The left hand presses down on the six twisted silk strings to produce microtones. Its prototype is found in the Dance and Music mural on the eastern wall of Anak Tomb No. 3, a Kogury tomb. The instrument was then introduced into the Shilla Kingdom (57 B.C.-A.D. 935). It was highly regarded for expressing the noble spirit of the ideal scholar.   Kayagum This twelve string zither is believed to predate the Unified Shilla Kingdom. The History of the Three Kingdoms indicates that it was created by King Kashil of the Kaya Kingdom (42-562). The instrument is related to the Chinese zheng and the Japanese koto. The instrument has twelve silk strings supported by twelve movable bridges. These strings are plucked with three fingers of the right hand, while the index and middle fingers of the left hand press down on the strings to the left of the bridges.