The boys achieved success right off the bat with the help of IU for their debut and continued to grab interest by teaming up with their second muse, Kim Ye Rim (Lim Kim). Now the boys will borrow the help of BESTie's Haeryung with their 1st mini album 'HI HIGH'.

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According to their agency, HIGH4's upcoming title track "Headache" is an urban retro funky song composed by PJ and Lee Jong Hoon, and written by Choi Kab Won and HIGH4's Alex and Youngjun. All four members also took part in composing and writing songs for the album, going above and beyond as rookies.

'HI HIGH' includes the title track "Headache" as well as "Say Yes", "Time Out", "True Love", "A Little Close", and "Not Spring, Love, or Cherry Blossoms", and will drop on the 27th!

Meanwhile, check out the MV teaser below!