1st Album: Alone
Released Date: October 5, 2001
01. Electric H.I.T world
02. 평온의 노을 (Muse over the Sunset)
03. 우리 이야기 (Our Story) Featuring Oh Sang Eun
04. Alone
05. 널 잃어버린 후에야... (The Lost of Sadness)
06. T.N.T
07. Red And White
08. 천상의 아리아 (Aria of the Will)
09. Persia Black Hole
10. Devil Of Angel
11. 내 마음은... (I Still Believe)
12. 이별이 아님을... (Unexpected Farewell))
13. Hidden Track
2nd Album: Messiah
Released Date: July 18, 2002
01. My Life is ... And My Way ...
02. I (Human Individual Cloning)
03. 아낌없이 주는 나무(Generous...)
04. 상자속의 그댄 (Falling in to you)
05. 몇년이 지나도 (Longing For You)
06. 사랑이란건...(Love Theme1)
07. 아낌없이 주는 나무 (Generous... Ballad Version)
08. 나의고물 Radio (My old Radio)
09. Media
10. 눈물이 마른 뒤 (Love Theme2)
11. White Angels
12. Bonus Tack 내일이 찾아오면 (New Mix-Down) (When Tomorrow Comes)
1st Concert: Live In Revolution
Released Date: December 11, 2002
Disk 1:
01. Present：포켓속의 그댄 (Love In My Pocket)
02. Present：Alone
03. Intro
04. Media
05. My Life Is...And My Way
06. 아낌없이 주는 나무 (Generous)
07. 몇년이 지나도 (Longing For You)
08. Heejun With H.I.T.I
09. 눈물이 마른 뒤 (Love Theme 2)
10. 나의 고물 Radio(My Old Radio)
11. 내 마음은.. (I Still Believe)
12. 내일이 찾아오면 (New Mix-Down)
13. 포켓속의 그댄 (Love In My Pocket)
14. 우리 이야기(Our Story)
15. 사랑이란건 (Love Theme 1)
Disk 2:
01. 천상의 아리아(Aria Of The Will):::Disc 2
02. Alone
03. Red & White
04. Persia Black Hole
05. Devil Of Angel
06. I (Human Individual Cloning)
07. Heejun With H.I.T. II
08. White Angels I
09. Finale
10. White Angels II
3rd Album: Legend
Released Date: July 28, 2003
01. I Don't Care For Anything But Music
02. 전설 (Legend)
03. 내 님
04. G. 선상의 아리아
05. 우린 너무 닮았죠
06. 서툰 고백
07. 진오기
08. The Romeo
09. Smile
10. 웃어요
11. Drug
Best Album: A Soaring For Dream
Released Date: April 28, 2004
Disk 1:
01. 종이 비행기 (A Soaring For Dream)
02. To Live Is To Fight
03. Puppy
04. Virus
05. Alone
06. Red And White
07. 천상의 아리아 (Aria of the Will)
08. Devil Of Angel
09. I (Human Individual Cloning)
10. 아낌없이 주는 나무 (Generous..)
11. My Life Is ... And My Way
12. 전설 (Legend)
13. G．선상의 아리아 (Best)
14. To Be Continued
Disk 2:
01. Drug
02. 우리 이야기 (Our Story)
03. 널 잃어버린 후에야 (The Loss Of Sadnedss)
04. 몇 년이 지나도 (Longing For you)
05. 사랑이란 건 (Love ThemeⅠ)
06. 아낌없이 주는 나무 (Generous‥Ballad Version)
07. 내님 (Inside)
08. 우린 너무 닮았죠 (Best)
09. 서툰 고백
10. Red And White (Live Version)
11. Persia Black Hole (Live Version)
12. Devil Of Angel (Live Version)
13. 평온의 노을 (Muse Over The Sunset Live
Version) (Live Version)
14. T.N.T (Live Version)
1st Single Album: Winter Letter
Released Date: December 15, 2004
01. Love Letter
02. Sad Letter
03. Love Letter (Acoustic Version)
04. Love Letter (Instrumental)
05. Sad Letter (Instrumental)
4th Album: Triple X
Released Date: September 9, 2005
01. MayFly
02. Easy 罵 (Intro) (Easy Despute (Intro))
03. Easy 罵 (Easy Despute)
04. [Sure:side]
05. 기억이란 작은 마을 (A Small Village of Memories)
06. Happy Ending
07. A.D. 2050
08. 잊으려...
09. 우린...
Special Album: Moon Hee Jun Special Album
Released Date: March 20, 2008
01 . Obsession
02 . WISH
03 . Soul
04 . git it up
05 . G선상의 아리아
06 . 포켓속의 그댄
07 . To Live is To Fight
08 . 종이비행기
09 . 기억이란 작은 마을
10 . Take it… Fire!!