SE O - Neverland (OST Agency Part.8)
SE O - 하루 (Day) (OST Brain, Your Choice of Romance Season 2)
SE O - 아무도 찾지 않더라도 (Even if nobody cares for you) (OST Nobody Knows Part.5)
SE O - 약속해 (Promise) (OST Missing : The Other Side Part.4)
SE O - KING
SE O - Spring Day Love Song (OST Goodbye to Goodbye)
SE O - Your World (OST While You Were Sleeping)
SE O - Kiss Me (OST Reunited Worlds Part.7)
SE O - Hidden Time (OST The King Loves Part.7)
SE O - Sad Heart (OST Reunited Worlds)