☆ Daegeum, which was a standard instrument for tuning all musical instruments since the Goryeo Dynasty and was widely used before the Three Kingdoms Period, is a resonant instrument and also known as Jeotdae.

The production process is to collect the raw bamboo from the root and cook it lightly on charcoal to remove the gin and tie it up so that the bamboo does not split and then marinate it in salt water for a month. Afterwards, dry enough in the shade, pierce holes, check the pitch, tie it in a strong string to prevent the instrument from bursting, and trim the shape to complete it. It is about 80cm long and has about 10 holes.