Biography
Infinity of Sound (국악 세쌍둥이) is a pop group of Korean triplets who use traditional instruments in their songs. Also known as IS/Is/IOS.
members:
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Kim Jin-ah, who plays the gayageum;
Sun-ah, the geomungo and
Min-ah, haegeum.
Their songs have been featured in Goong S/Princess Hours.
Biography text from Last.fm, available under CC BY-SA.