All Night (까만밤) (With Sik-K) ko
Aloha (Feat. Bora) ko
Arm Pillow (팔베개) (feat. Kihyun) ko
Bad Desire ko
Bangkok (방콕) (With Francis (프란시스)) ko
Before Sunrise ko
Breath ko
Business (Feat. BE’O) ko
Decrescendo (무덤덤) ko
Diamond (다이아몬드) ko
Dolls (돌스) ko
Don’t Smile At Me (웃어주지 말아요) ko
Drivin’ Me ko
Farewell Everyday (우리는 매일 이별을 향해 걸어가지) ko
First Love (첫사랑) (With Jeong Sewoon) ko
Funny ko
Good Bye (이별언어) ko
Good Night MY LOVE (잘자요 내사랑) ko
Good To Be With You (괜찮나요) ko
Goodbye (이젠 안녕) ko
Gotta Go (가라고) ko
Heart (마음) (Feat. Jukjae) ko
I Miss You ko
I Still (뻔한이별) (With Sung Si Kyung (성시경)) ko
If I Had Known (알았다면) ko
Just Once ko
Lean On Me (어깨) (With Kwon Jung Yeol (10cm)) ko
Little Moments (잔다툼) ko
Love Is One More Than Separation (사랑은 이별보다 하나가 많아) (With Junggigo) ko
Love Recipe (러브 레시피) (With Junggigo) ko
My Blossom ko
No Sleep (잠은 다 잤나봐요) (With Yoo Seung Woo (유승우)) ko
On the Road (길에서) (Feat. Jukjae) ko
Only You ko
Paradise ko
Puzzle (With Park Woo Jin (AB6IX)) ko
Rain (비가와) (With Baekhyun) ko
Rain Drop (비가 오잖아) (With Ovan) ko
Shadows (멀어진다) ko
Should I Confess / Saying I Love You (사랑한다 말할까) ko
Silence ko
Soaked (흠뻑) ko
Some 2 (썸 2) (Feat. Jung Yong Hwa) ko
Some feat. 긱스 릴보이 (Lil Boi of Geeks) ko
Starry Night (Feat. Mirani) ko
Take Me Back In Time (시간을 돌려서) ko
Tell Me (내게 말해줘) ko
The Blue Night of Jeju Island (제주도의 푸른 밤) ko
The Night (기우는 밤) (Feat. Geeks) ko
The Only One (하나면 돼요) ko
The Space Between (틈) ko
Tree (나무) (Feat. Davii) ko
When It Rains (비가 오면) (With Mad Clown) ko
When I’m with you (너와 함께) ko
Y (Please Tell Me Why) ko
You Don’t Know Me (모르나봐) (With Brother Su) ko
너에게 배웠어 ko
온기가 필요해 ko
일곱살 (With MoonMoon) ko
좋은 사람 ko