HIGH4 was a South Korean pop quartet under N.A.P Entertainment. In 2014, the group debuted with the digital single "봄 사랑 벚꽃 말고", featuring IU. The members include Sunggu, Alex, Myunghan and Youngjun.

They released their debut mini-album on August 27, 2014 titled HI HIGH which featured the promotional song "뱅뱅뱅" (Headache), as well as their two previous digital singles.

High4's disbandment was confirmed on August 16, 2017, when Alex announced via Instagram Live that the group members would pursue individual activities. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.