As per Elvina’s request, here’s Korean band C.N.Blue performing their hit song I’m a Loner (외톨이야).

C.N.Blue ~ I'm a Loner Live@Music Core 20100116

C.N.Blue ~ I’m a Loner Live@Music Core 20100116

24MB 3:18 H.264/AVC 480×272 PSP Ready

(download | thm | preview)

Credit: source video from SooHyunnie@jpopsuki

I heard this song playing at UppCon last weekend. I recognized it from selecting a live performance for this post.