December - She's Gone (Feat. Lee JinE)
December - 풍차 (Vane)
December - 파란 (波瀾) (Blue)
December - 너에게 다줄게 (I'll give you everything) (Feat. JinE)
December - 사랑 참... (Love Is So...) (OST IRIS)
December - 돌아올순 없나요 (Can't You Come Back) (OST IRIS Part.5)
December - 돌아올순 없나요 (Can't You Come Back) (Ver. 2) (OST IRIS Part.5)
December - 그 노래 (The Song)
DECEMBER - 궤도 (Orbit)
December - She’s gone2