| 1초 1분 1시간 (1second 1minute 1hour) (1cho 1bun 1sigan)Korean 1second 1minute 1hour (Something Between Us X 2am) | |
| 1초만 더 (1 One More Second)Korean F.Scott Fitzgerald's Way Of Love | Translation |
| All RightEnglish, Korean Let's Talk | |
| Always MeEnglish, Korean Ballad 21 F/W | |
| BirthdayJapanese VOICE | Translation |
| DanceKorean Let's Talk | Translation |
| First LoveJapanese VOICE | Translation |
| I KnowKorean Let's Talk | |
| I Love YouEnglish, Korean I Was Wrong | |
| If you believeEnglish Freestyle's Lost Gems Vol. 8 | |
| IntroKorean 죽어도 못 보내 | |
| LostKorean 잘못했어 | Translation |
| Love U, Hate UEnglish, Korean Saint o’clock | |
| loveskinKorean Let's Talk | Translation |
| MirageEnglish, Korean Saint o’clock | |
| MissingJapanese Never Let You Go | |
| No. 1English, Korean | |
| Pretty GirlJapanese VOICE | Translation |
| SunshineEnglish, Korean One Spring Day | |
| To. AM (For you)English, Korean Let's Talk | |
| Winter GiftJapanese VOICE | Translation |
| With Or Without UEnglish, Korean Saint o’clock (2010) | |
| 君のためにできること (For you)Japanese VOICE | Translation |
| 壊れそう (Like Crazy)Japanese VOICE | Translation |
| 愛の歌がRadioから (Ai No Utaga Radiokara)Japanese VOICE | Translation |
| 死んでも離さない (Never let you go)Japanese VOICE | Translation |
| 無邪気な笑顔で (Mujakina Egaode)Japanese VOICE | Translation |
| 笑ってあげられなくてごめん (Waratte agerarenakute gomen)Japanese VOICE | Translation |
| 誰にも渡せないよ (Darenimo Watasenaiyo)Japanese VOICE | Translation |
| 電話に出ない君に (Denwani denai kimi ni)Japanese VOICE | Translation |
| 가까이 있어서 몰랐어 (Should′ve known) (gakkai iss-eoseo mollass-eo)Korean Ballad 21 F/W | |
| 그냥 있어줘 (Just Stay)Korean NOCTURNE | Translation |
| 그녀에게 (To Her)English, Korean I Was Wrong | |
| 그대 떠나가도 (geudae tteonagado)Korean 그대 떠나가도 | |
| 그대를 잊고 (Forgetting You)Korean One Spring Day | Translation |
| 그때 (Back Then)Korean One Spring Day | Translation |
| 나타나 주라 (Over the Destiny)Korean Let`s Talk | Translation |
| 내 사랑은 말야 (My Love) (nae salang-eun mal-ya)English, Korean Let’s Talk | |
| 내 생각 (My Thoughts) (nae saeng-gag)Korean Let’s Talk | Translation |
| 내게로 온다 (Coming To Me)Korean One Spring Day | Translation |
| 내꺼였는데 (You Were Mine) (naekkeoyeossneunde )Korean F.Scott Fitzgerald's Way Of Love | Translation |
| 너 말곤 다 싫다 (neo malgon da silhda)Korean 너 말곤 다 싫다 | |
| 너도 나처럼 (I wonder if you hurt like me)Korean F.Scott Fitzgerald's Way Of Love | Translation |
| 너를 읽어보다 (Reading you)Korean One Spring Day | Translation |
| 너뿐이야 (Only you)Korean NOCTURNE | Translation |
| 다시 사랑하기엔 (To Love Again)Korean Saint o’clock (2010) | Translation |
| 못 자 (I can't) (mos ja)English, Korean Ballad 21 F/W | |
| 미친듯이 (Like Crazy)Korean Saint o’clock | Translation |
| 바로 나야 (It's Me)English, Korean Saint o’clock | |
| 볼수록 예뻐 (You're Prettier the More I See You)Korean NOCTURNE (2013) | Translation |
| 불안하다 (Anxious)Korean Saint o’clock | Translation |
| 사랑 그런거 (salang geuleongeo)Korean | |
| 사랑은 먼 길을 돌아온 메아리 같아서 (Echoes of Love's Journey) (salang-eun meon gil-eul dol-aon meali gat-aseo)Korean Echoes of Love's Journey | |
| 사랑한단 말 못해 (Can't Say I Love You)Korean Saint o’clock | Translation |
| 사랑해 사랑해 (I Love You, I Love You)Korean F.Scott Fitzgerald's Way Of Love | Translation |
| 실감 (Realized) (silgam)Korean Let's Talk | |
| 아니라기에 (Not Because)Korean | Translation |
| 어느 봄날 (Οne Spring Day)Korean One Spring Day (2013) | Translation |
| 어떡하죠 (What Should I Do?)Korean | Translation |
| 오늘따라 (Days Like Today) (oneulttala)Korean Let's Talk | |
| 웃는다 (Outro) (usneunda)Korean 죽어도 못 보내 | |
| 웃어 줄 수 없어서 미안하다 (Sorry I Can't Smile For You) (us-eo jul su eobs-eoseo mianhada)Korean 잘못했어 | Translation |
| 원숭이Korean | |
| 위로 (Consolation)Korean One Spring Day | Translation |
| 이 노래 (This Song)Korean 이 노래 | Translation |
| 이별 그 날 (The Day) (ibyeol geu nal)Korean Let's Talk | |
| 이젠 없다 (Not Now)Korean Saint o’clock | Translation |
| 일단 돌아서지만 (First, Dont Turn Around)Korean 잘못했어 | Translation |
| 잘 가라니 (No good in good-bye) (jal galani)Korean Ballad 21 F/W | |
| 잘 이별하기 (To Break Up Well)Korean F.Scott Fitzgerald's Way Of Love | Translation |
| 잘못했어 (I Did Wrong)English, Korean 잘못했어 | |
| 전활 받지 않는 너에게 (You Wouldn’t Answer My Calls) (jeonhwal badji anhneun neoege)Korean Saint o’clock | Translation |
| 죽어도 못보내 (Never let you go)Korean 잘못했어 | Translation |
| 준비 (Ready) [Jinwoon Solo] (junbi)Korean Let's Talk | |
| 찜했어 (Be My Lady) [Changmin solo] (jjimhaess-eo)English, Korean Let's Talk | |
| 천사에게 (To An Angel)Korean NOCTURNE | Translation |
| 청혼 (Propose) (cheonghon)Korean Ballad 21 F/W | |
| 최고의 사랑 (The Greatest Love)Korean | Translation |
| 추억 다 지워 (Erase All Memories) (Chueog da jiwo)English, Korean F.Scott Fitzgerald's Way Of Love | |
| 친구의 고백 (Confession of a friend)English, Korean Time For Confession | |
| 해피엔드 (Happy End) (haepiendeu)English, Korean Let's Talk | |
| 혹시 니 생각이 바뀌면 (If you change your mind) (hogsi ni saeng-gag-i bakkwimyeon)Korean If you change your mind | |
| 후회할거야 (Regret)Korean NOCTURNE | Translation |
