The Very First KPop Song You Ever Heard:
Super Junior - Mr. Simple
I've told this story at least twice, so I won't tell it again. Though, I have been second guessing myself. F4fighting! showed me two music videos in one day, but I can't remember which one she showed me first. I believe it was Mr. Simple, but it might have been SS501's Love Ya. It was Probably Love Ya. F4fighting!, do you remember?
If we are being technical, my first kpop video ever was several years ago while I was in high school. My friend casually showed me what years in the future, I came to realize was BigBang's Haru Haru and Beautiful Hangover (Japanese). I remember loving them, but moving on rather quickly (what was my problem??). It was October 2011, that I was shown Mr. Simple by friends of that original friend and I have been completely addicted ever since.