HIGH4's new sub-unit HIGH4:20 has dropped another MV teaser for debut track, "HookGA."

In this one, the two members, Alex and Youngjun, pick up an old iPod from the ground, looking both confused and a little scared, perhaps how kids would react at the discovery of an ancient artifact as this.

The instrumental sounds very catchy and edgy. �And even more exciting, it's going to feature a member of MAMAMOO! �Get ready for the release!