High4 (Korean: 하이포; stylized as HIGH4) was a South Korean boy band under the management of N.A.P Entertainment. The group consisted of members Alex, Myunghan, and Youngjun. They officially debuted into the Korean entertainment industry on April 8, 2014 with the song "Not Spring, Love, or Cherry Blossoms" featuring IU. On January 31, 2017, it was announced that leader Sunggu would be leaving the group.[1]
On August 16, 2017, Alex announced on his Instagram live that the members have gone their separate ways and they would have their own solo activities, confirming the disbandment of High4.
^"'2014 골든'음원 본상 후보⑥ god·HIGH4 '4~5월 차트를 부탁해'" [2014 Golden Disc bonsang nominees ⑥ god and HIGH4: 'Take care of the April-May chart']. JTBC News (in Korean). 2014-12-31. Retrieved 2023-03-27.
^"[멜론뮤직어워드] 엠씨더맥스 '그대가 분다', 발라드부문 수상" [[Melon Music Awards] M.C The Max's 'Wind that Blows' wins Ballad Award]. Star Today (in Korean). 2014-11-13. Retrieved 2023-03-27.