Sunwoo Jung-a (Hangul: 선우정아, born May 11, 1985), is a South Korean musician, singer-songwriter, and record producer who has worked with numerous Korean artists including IU, Suran (singer), GD & TOP, 2NE1, Lee Haeri, Lee Hi, and San E. She released her debut album, Masstige, on May 10, 2006.
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