Our Night Is More Beautiful Than Your Day (Feat. Kim Hyun Chul)
I Don't Wanna Say Goodbye (Feat. Jung In)
Believe What I Say (feat. JooHyun Oak)
You are, to me
형
Believe What I Say (with JooHyun Oak)
끝난건가요
사랑하오 (feat. Yoon Sang)
Loving You
Loving you
그대안의 블루 (with Lee So Ra)
춘천가는 기차
연습실에서
그냥 이렇게 (feat. Lee So Ra)
Remember that summer
When I grow up
어부의 아들 (feat. Park Wan Kyu)
Seoul, Rainy
그보다 더 (with Park Hyo Shin)
It`s Been A While (Maxim City Summer Life c.f)
I Love You (Feat. Park won)
The Line (Feat. Paul Kim)
Our farewell (Feat. Choi Baekho)
Come Back to Me
Give me a hug. (Feat. Baek Ji Young)
Kiss&Say Goodbye
Happy Birthday
When I grow up (Kid)
주께 갑니다 (feat. Kim Hyun Chul)
Don't leave me alone.
Spring Song
Wu (Rain)
Scar
We Can Fly High
자아도취
You Know Why (feat. Kim Kwangjin)
그보다 더 (feat. Park Hyo Shin)
달의 몰락
Wedding Waltz (Feat. OKDAL)
Talk About Love
Together as One
Flower
When I grow up (version 2)
