Deja Vu

So i was on my sister's blog and she updated her blogpost. As i was reading it her new list of songs were playing and i was enjoying them (she's so up to date with these korean songs :3) till i heard one particular song, called So Crazy by AA. Now i swear i NEVER heard of this song before. My first time hearing it actually...but for some reason... i don't know why..but i rmb someone singing that..to me.. o.o and it was from a stranger o.o but i don't know if it was from my dream or real life o.o. It's weird i know but really o.o someone DID sing that to me.. o.o somewhere o.o..