mouth organ or in Hmong language called geej. is musical instrument made from bamboo and hard wood. to be one of the oldest musical instrument. include bamboo six piece and have length unequal with hard wood.The mouth of the long round Hmong language called Kuav qeej is red wood.Also known as the ntoo txwv pem.When inhaled or blow out will give sweetly sound until the end of the song.Hmong people will use mouth organ or qeej in essentially funeral ceremony.By guide souls of the dead to the hereafter or ancestral land.In hmong tradition so forbid not to blow mouth organ or qeej in the house.Mainly will train in places far from the village.