The members of upcoming Happy Face girl group Dream Catcher may have seemed all innocent and girly in their teaser photos, but that seems to be only half of the concept they're going for!

They released a concept trailer for the girl group, a video that briefly shows clips of each member, some dressed in street attire and more casual clothes, but doesn't show their faces that clearly. Everything is very dream-like, especially the very intriguing music that starts off like a music box then goes into a more upbeat, sick beat.

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Listen above! What do you think of this interesting concept before?