Saenghwang

Saenghwang is a mouth organ made of a wind chest.
It used to be made of a gourd but now is made of wood and metal, it has a set of 17 cylindrical bamboo pipes with brass reeds.
Air is blown into a hole in the wind chest, causing the metal reeds to vibrate like a harmoncia.
It is mainly used in duet performances with the danso.