1TEAM, which made a comeback with its new digital single "ULLALI KKOLLAELI," is drawing attention by releasing a cover dance video of "ULLALALI KKOLLAELI," which collaborated with dance prodigy Na Haeun on 1TEAM's official YouTube channel and YouTube's "Awesome Haeun" channel on Aug. 6.

In the released video, 1TEAM and Na Haeun not only performed the powerful choreography with perfect breathing but also added witty performances to the existing choreography to catch the eye.