Yet-to-debut boy band, F.cuz (pronounced “focus”) is really working hard to gain a following before their debut in January.

As a special treat, the four-member group released a couple Christmas videos filled with the holiday spirit, featuring a semi-traditional tree decorating time and an a cappella performance of song called, “F.cuz Song.”

In the first video, the F.cuz members, in true Charlie Brown style, try to make a sad little tree into a happy Christmas one. I find myself wantingLeeU’s hat. It’s red and has stars that light up!

The second video is an a cappella performance of “F.cuz Song.” Here’s a small taste of their ability as a group.

Maybe it’s leader Jinon’s booming voice, but F.cuz seems to have a bit of a swagger and chemistry that makes me doubt that they really are a green, haven’t-debuted-yet idol group, but they are. Mainly, the F.cuz boys seem quite confident and comfortable in front of the camera. We’ll have to see how well they do after their first performance on January 8thon KBS “Music Bank”. F.cuz will also perform on MBC “Music Core” onJanuary 9th, and finally on SBS “Inkigayo” on January 10th.

Look forward to 2010’s first new boy group, F.cuz!