대.다.나.다.너 is the cutsey concept done right. Designed to contrast their last comeback, this song is a perfect catchy summer tune. It's popping with life, catchy and they do this cool thing in the MV where it's reversed but their mouths still match the words (for the most part).
It was written by the same guy who wrote SHINee's Dream Girl and I can see that. It's not particularly inventive but it's just a plain old pop song. Definitely give it a listen and their other singles if you haven't checked VIXX's stuff out before.