Lee Chan Hyuk (이찬혁) is a South Korean singer-songwriter under YG Entertainment. He is a member of the sibling duo AKMU, who rose to fame after winning the second season of K-pop Star in 2012.
He, along with his sister Soohyun and their missionary parents, lived in Mongolia for two years prior to competing in the second season of K-Pop Star.
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He composed all of Akdong Musician's songs.
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When asked about his ideal type, Chanhyuk jokingly said “A girl that doesn’t approach me for my copyrights, a girl that has a higher nose than my sister.”