”Even more mature” BAE173 remakes T-ARA's 2010 hit ”Why is that happening?”

The group BAE173 announced through their official SNS account at 7 PM today (27th) that they will be releasing the song "What's Up" by the group T-ARA.
The teaser video is a remake of the new song "Just One Day" that was released earlier.
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The news came after a spoiler video for "For One Day?", further raising expectations for the preview track released for their first full-length album.
The remake of "Why is that happening?" retains the sensibility of the original song, but also incorporates BAE173's own unique color, teasing a new atmosphere.
This remake, which reinterprets the much-loved original song released in 2010, is expected to bring new enjoyment to both existing fans and new listeners.
In the teaser video, the members are wearing tuxedo costumes, showing off a more mature look, teasing a sophisticated image that matches the atmosphere of the song.
This raises expectations for the stage and performance that will be revealed in the future. BAE173 will be unveiling the released preview soundtrack and music video in succession over two days, October 2nd and 3rd.