I LOVE SS501, so was speechless when I saw this...I don't typically like sub-units very much, but TECHNICALLY this isn't a sub-unit...I'm can't express how excited I am about this!!! 

Youngsaeng, Kyujong and Hyungjun together again?!! I can't wait for it...This would be PERFECT, if it actally happens<3.

Check out this article...