HoHyeon Kim (김호현) is a special member of Four Sigma Associate Society. He studied Applied Music at Seoul Institute Of The Arts, which college has most produced the top popular K-pop stars to date in South Korea. Likewise, Kim has been a professional vocalist as appeared on the major Korea TV Channels; KBS, MBC, and SBS, etc. Today, HoHyeon is a professional vocal coach (trainer) directing the popular K-pop Stars, with writing musical articles as a columnist in the field.
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