Yoon Hyun-sang (
Korean: 윤현상; born January 14, 1994) is a South Korean singer and songwriter. He is known for the TOP7 of
SBS's K-pop Star Season 1.[1] He released his debut album, Pianoforte and collaboration with labelmate
IU for his debut song, "When Would It Be" on October 31, 2014.[2]