Has anyone ever heard of them? I'm into Korean boy bands; But I've never heard of this band until a couple of days ago. I stumbled upon their song 'RingDingDong' and, at first, I could not help but laugh at the song (it just sounded crazy). But after listening to it again, I realized it really is an extremely addicting song. Since then, I've downloaded quite a few of their songs, including RingDingDong.
If you like them, you can list a few of songs you enjoy by them. Or make your own comments on the band, whatever.
In any case, if you haven't heard the song I was mentioning of, here it is: