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Kang Seung-yoon debuted as the leader of Winner in 2014. Winner is a South Korean boy group formed by YG Entertainment through the survival program "WIN: Who is Next." The group consists of four members: Kang Seung-yoon, Kim Jin-woo, Lee Seung-hoon, and Song Min-ho. Winner made their official debut on August 17, 2014, with the release of their debut single album "2014 S/S."