Korea top 200 position: #1 (highest selling album in 2006)

Versions: A, B, C, D
Track List :
1. "O"-正.反.合. ("O" - Jung.Ban.Hap.)
2. 세상에 단 하나뿐인 마음 (You're my miracle)
3. Hey! Girl
4. Get Me Some
5. I'll be there
6. 네 곁에 숨쉴 수 있다면 (White Lie - in Version C & D ONLY)
7. Remember
8. 이제 막 시작된 이야기 (The story has just begun)
9. ON&ON
10. Phantom 환영(幻影)
11. You only love
12. 풍선 (Balloons)


7. 2006 Winter SM Town - December 12th, 2006
8. 2nd Asia Tour Concert 'O' Live Concert - June 20th, 2007
9. 2007 Summer Vacation SM Town - July 5th, 2007
10. 2007 Winter SM Town - December 7th, 2007
11. Mirotic
Released: September 26, 2008
Length: 50:25
Korea top 200 position: #1 (highest selling album in 2008)
Versions: A, B, & C

Ver. C

1. Wrong Number
2. 사랑아 울지마 (Don't Cry My Lover)
3. 주문-MIROTIC
4. CRAZY LOVE
5. HEY! (Don't bring me down)
6. 소원 (Wish)
7. 넌 나의 노래 (You're my melody)
8. 노을.. 바라보다 (Picture of You)
9. 무지개 (RAINBOW)
10. 사랑 안녕 사랑 (Love Bye Love)
11. 낙원 (PARADISE)
12. 악녀 (Are You A Good girl?)
13. Flower Lady
14. Don't Say Goodbye
15. 잊혀진 계절 (Forgotten Season)
16. Love in the Ice