Hyun Seong - 그날의 나 그리고 너 (Always be there)
Hyun Seong - Cry for you
Hyun Seong - Wherever you are
Hyun Seong - Blue
Hyun Seong - 오직 너만을 (Only You) (OST The King 2 Hearts Part.4)
Hyun Seong - 여전히 그대를... (Still You...)