I cannot say much about this group because they are soon to be lauched and announced by SM Entertainment. There is a lot of hype around this guys, and this first song released by just two of their members has a good sound to it thus far.
Eat Your Kimchi has more about these guys. It's fun when they admit in their segments that a lot of the videos that their fans vote to make them do aren't always interesting and enjoyable for them to review. It's great to see genuine enthusiasm from them in this review.
Cool shot, but is that really the guy's iris? Looks pretty anime to me.