Big Bang's "Haru Haru" was the song that at first I didn't liked it, but when I listened more to it, the more I loved that song. It's actually happens a lot to me, if from the first listening I don't like the song, later I will gonna love it. Well, you know that the same happened with NU'EST - Sleep talking, now I love that song. So, yea, same I experienced with "Haru, Haru" and it's really amazing song + MV. Also I really love "Severely" by FT. Island, maybe I love video more, but..ahh.. both of them, song and video are awesome :D Also, MBLAQ "War".. it's strong song, but at the same time it makes you cry. When first time I saw video, I cried like a baby and I just wanted to listen to this song more and more. Actually all those songs: "Haru, Haru", "Severely" and "War" made me cry along with videos, it's amazing how effective music is :) And from all of them I can't really choose one, because those three songs has very special place in my heart <3

mine is lena park - No Break, idk i just in love with this song.. it's bring old memory of mine

http://www.youtube.com/watch?v=kVLQHx9vDes

Mirotic by TVXQ

Janus by boyfriend omg this song even after I've played it over and over again and watched the MV a thousand times it still gives me that fluttery feeling in my tummy. This was the first song that got me obsessed with kpop x3

Mine is "come back to me" by Taeha.

Lee Hi - Rose

The song that brought me into Kpop is definitely Because I'm Stupid—SS501~ I'm absolutely in love with them (pq ) they were my first kpop bias group... And can you believe it that YoungSaneg (my first bias ever) has the same birthdate as Ren Ö xD haha but I feel that Love Ya and Love Like This are one of my favorite ss501 songs~^^

until forever by ss501

I don't remember the title, but its a TV5Q song.
Haru Haru is the first song I heard from Big Bang, and got to love them.

By no means the first Kpop song I heard, but one that sticks with me and makes me go all soft every single time I hear it is 2AM's "Never Let You Go." I never get tired of it. =)

hah, for me it's Block Bs ''Nalina'. That song is really awesome and it shows their cool image. The song was made before their Thailand scandal so I think that since Nalina, Block B is the most powerful group in kpop lol. I mean they had a lot of scandals and other problems like besides that Thailand scandal, the lawsuit against Stardom ( and who knows how they lived during their stay there) and moving to another company and Zico also had to deal with a guy who made a diss-track about him and BBCs (he called us es and complained about korean BBCs support for Zico in the underground scene).
Yeah, Nalina just shows how great Block B is and how strong they are. ( sorry that it's so long and pointless otl)

I would have to say DB5K's Love in the Ice. (Jap. Ver.) idk this song just means so much to me. I wasn't my first (Hug was xD) but I could never get tired of listening to it. And still to this day I believe that they will get back together.....

big bang's lies and ukiss's believe..