december - She's Gone (feat. JinE)

december - I'll give you everything (feat. Lee JinE)

december - The Song

december - Love is like watchings stars with you

december - You mean everything

december - In Place

december - She's Gone2

december - 슬픔이 와락…

december - Mother
december - 시집와줄래
december - 후에…
december - 이별연습

december - The Only I can give you is Love

december - Reason
december - Piano
december - The reason Y I'm missing u
december - Keep the moment
december - Reason (Guitar Version)

december - Pretend (Feat. Zick Jasper)
december - Thrill me
december - Sad day

december - Like a stranger (Feat. Black Belt)
december - Heaven
december - Memories
december - Letter From Memories
december - It goes on N on
december - Unfinished
december - Going home

december - Memories
december - Memories (Soobin Version)

december - Going Home
december - Why Why

december - Fire
december - Fire (DK Version)
december - Fire (YH Version)

december - The taste of your lips (Feat. EB)

december - Unfinished

december - Don`t Go
december - Miss You
december - While we haven't met.. (Feat. 물만난물고기)
december - Remember Me
december - So beautiful
december - I will tell you
december - Passion
december - She`s Gone
december - Unfinished
december - A dead of night sad song

december - She`s Gone
december - Afraid to love
december - You are my everything
december - Memory in love
december - It's love (Feat. 이로울, IRIN)

december - 이 노랠 빌려서 (Feat. 이로울 & IRIN)

december - 안녕

december, J-Cera - Stay There (Feat. IRIN, Yunmi)

december - 바통

december - 미인

december - 별이될께

december - Once Upon A Time

december - 혼자왔어요 (December Version)

december - If we love again
december - Shout! Shout!
december - She's leaving (Dear Mom)
december - I'm fine
december - Are you coming-
december - I'm In Love
december - Only! (Part.2)
december - Nagging
december - I'll be there
december - About my only love
december - Because of love
december - Girls love the players
december - Sad day
december - say something (HeeJae)
december - Once Upon A Time

december - can't you come back
december - can't you come back (Ver.2)

december - Girls love the players
december - Because of love
december - HeeJae Part.2
december - My love is pure
december - say something (HeeJae Part.3)
december - I have to realize
december - Even if you say not
december - Love, Love