Bit by Bit, Slowly, To You (조금씩, 천천히, 너에게) (With Baek A) ko
Camellia (동백꽃) (With Hyuk) ko
Do You Want To Walk With Me? (Romance 101 X Jukjae) (나랑 같이 걸을래 (바른연애 길잡이 X 적재)) ko
Fall In Love (나도 모르는 사이에) ko
First Love (처음 사랑해) ko
Holding Hands Or Walking Together. (손을 잡는다거나, 같이 걷는다거나) ko
I Know (알아) (With. Na Won Joo) ko
I’m Coming Home ko
Lights (빛) (Feat. Yerin Baek) ko
Moments Make Memories (기억은 추억이 된다) ko
Night Poem (야작시 (夜作詩)) ko
No, Thanks (개인주의) (Feat. Zion.T) ko
One Another (서로의 서로) ko
Runaway ko
Same Same (너나 나나) (Feat. Sam Kim) ko
Scenery (풍경) ko
Shining, My 2006 (반짝 빛나던, 나의 2006년) ko
Sky Dream (꿈) ko
Trace (흔적) ko
Warm (따듯해) ko
Wish (바람) ko
Without You (너 없이도) ko
빛나는 당신을 위해 (With Kwon Jin Ah) ko