A Chapter of You (With DK (Seventeen)) ko
A Glass of Soju (소주 한 잔) ko
Absence (널 그리워하고 있어) ko
Darling ko
Diary of Dawn (새벽일기) ko
Don’t Leave (떠나지마) ko
Dreams (꿈) ko
Falling Flower (낙화 (落花)) ko
Game (놀이) (With Kang Min Hee (Miss $) (feat. San E) ko
Home (집이 돼줄게) (With Bumkey) ko
Hurt (아파) ko
I Miss You (그리워) (With Hyorin 효린 (SISTAR)) ko
I’d Love to, But I Have My Hands Full at the Moment ko
I’m Here ko
Lie (미안해) ko
Loss (한숨) ko
Love (사랑 이토록 어려운 말) ko
My Love ko
Next to You (그댈 담은 밤) ko
Ocean Waves (바다가 들린다) (Prod. NIve) ko
One Summer (그해 여름) (With Wendy) ko
Only You (너만 너만 너만) ko
She Didn’t Love Me (사랑했던걸까) ko
Sometimes (요즘) ko
Sorry (고백) ko
The Fault In Our Stars (우리, 같이) ko
The Reason Why (이렇게 좋은 이유) ko
They Don’t Know (사람들은 모르죠) ko
Tonight (이 밤) ko
Touch Of Love ko
Understand (이해) ko
With Me (오늘이 지나면) (With Vincent Blue) ko
With You (곁) ko
You & I (그대와 나) ko
You Can Do That (넌 그래도 돼) ko
inside ko
loveagain ko
see, you (Feat. U Sung Eun (유성은)) ko
가만히 아파 (Feat. Kang Min Hee) ko
곁에 있는 너 ko
그땐 알 수 없었던 것 (Feat. 백지웅) ko
나를 깨워주는 ko
네게 ko
사랑 이토록 어려운 말 ko
언제쯤 보일까 ko