29 (스물아홉) ko
99 (바른 연애 길잡이 X 스탠딩 에그) ko
A Song Only I Wanna Know (나만 알고 싶은 노래) ko
All About Farewell (이별의 모든 것) (With Jamie) ko
Always Be With You ko
Because It’s You (Duet with Lee Yubin) ko
Break Up For You, I’m Still… (feat. Park Shin Hye) ko
Cleaning (청소) ko
Crazy ko
Cuz It’s You (너라면 괜찮아) ko
Dear You (사랑하는 너에게) ko
Distance (멀어진 만큼) ko
Everyday ko
First Love (네 생각 나더라) ko
Fool (바보야) (With 이해리 (Lee Hae Ri) of 다비치 (Davichi)) ko
Friend to Lover (친구에서 연인) ko
Good Night (Healing Song) (잠 못 드는 그대에게) ko
Have You Ever Had Heart Broken? (사랑에 아파본 적 있나요) ko
How Would It Be (어떨까) ko
I Know It’s You (그댄 걸 알지만) ko
I Know What Is The Love After Broke Up (헤어져야 사랑을 알죠) ko
If You Comeback (그대 돌아오면) ko
Ironic en
It’s Hanging (맘에 걸려) ko
Little Star ko
Love is You (사랑은) (with Yeseul) ko
Love or Like (With 휘인 (Whee In) of 마마무(Mamamoo), JISIM) ko
Nobody Knows ko
Not Clumsy Anymore (더는 서툴지 않게) ko
Nothing but Sunlight ko
Oh Wait (오 잠깐) ko
Once Again (feat. Han So Hyun of 3rd Coast) ko
Ordinary Day (보통의 날) ko
Please Forget Me (그래요 나를 잊어요) ko
Prettiest One (너만 예뻐) ko
Pun (농담) ko
Reason ko
Reminiscence (어제의 우리들) ko
S.C.H (small but certain happiness) ko
S.C.H (소확행) (small but certain happiness) ko
Sad Name ko
Say Yes ko
She (반짝이는 그대여) ko
She Is Back ko
So Pretty (예뻐서 그래) ko
So high (With JISIM) ko
Speechless ko
Starry Night ko
To Anywhere (어디로든) ko
Traces of You (그날의 위로) ko
VOICE ko
What (뭘까) ko
What Are You Thinking About (무슨 생각해) ko
Yes, You (그래, 너) ko
You Are in My Heart (넌 내 안에) ko
You’re Precious (그대가 소중해) ko
너라는 세상 ko
널 사랑했을까 ko
데리러 갈게 ko
두 번째 사람 (With San E) ko
마음의 지도 ko
밉진 않아 ko
별의 조각 ko
사랑의 계절 (With 예슬) ko
오늘 밤은 (With JISIM) ko