đàn nhị

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• Vietnamese two-chord fiddle

• Nhi (or Co) is a sort of vertical violin with two strings of braided silk, a long handle and a sound box covered by a membrane of snake skin. With its melodious sounds, Nhi can express the subtle mood of man's soul. Due to its diversified use, Nhi is indispensable in a traditional musical orchestra

• Những từ phát âm/đánh vần giống như "đàn nhị": 
  ân nhân an nhàn