In what year was the South Korean boy group whose leader is Kang Seung-yoon formed?
Kang Seung-yoon Kang Seung-yoon (born (1994--) 21, 1994 ), known as Seungyoon, is a South Korean singer-songwriter, record producer, actor, and leader of boy group Winner. In 2010, he participated in the reality television singing contest "Superstar K2" and finished in fourth place. In January 2011, he became a trainee under YG Entertainment and went on to debut as a solo artist in July 2013 and as the leader of Winner in October 2013.
Thunder (singer) Park Sang-hyun (Korean: 박상현 ; born October 7, 1990) better known by his stage name Thunder (Hangul: 천둥 ; RR: "Cheondung " ), is a South Korean singer, songwriter, actor and model. He is a former member of South Korean boy band MBLAQ. On December 16, 2014, it was announced that he had departed from the group to focus on studying music. He signed with Mystic Entertainment's music label APOP on February 11, 2015 and released his debut extended play on December 7, 2016.