Hahaha, yeah. It's funny, all my friends hear me. They think I'm insane as they can never tell what I am saying. They know I am learning Korean, but they think I'm crazy :P
2NE1, Sistar/Sistar19, 4Minute, Hyuna (when she went solo for Bubble Pop), Kara, SNSD obviously, Wonders Girls, Co-Ed School, one song of SHINee xD! I'm not all that into the all Male Pop groups. No offense. Those are all the ones I can think of. I'm pretty sure there is more, but I can't remember xD!
Oh quick question. Would 몰라 mean just don't know, in the form of like. You don't know men. As from Co-ed school. Could you also use it in like, I don't know where your kids are?
As google says for I don't know to use 나도 몰라.
I never trust google to it's full extent though.