Okazaki Ritsuko
- "niji wo mita"
- 12 gatsu no yuki no hi
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- 1st Priority
- A Merry December
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- Agapé
- COCX-32653 : Melodic Hard Cure (Misc-Melocure)
- COCX-33332 : UFO Princess Valkyrie Theme+Insert Song, Almost All Compilation (UFO Princess Valkyrie)
- All in All
- COCX-32653 : Melodic Hard Cure (Misc-Melocure)
- COCX-33332 : UFO Princess Valkyrie Theme+Insert Song, Almost All Compilation (UFO Princess Valkyrie)
- Birthday Girl
- Cynthia - aisuru hito
- KICA-408 : Rebis-C.T.i.A/O.S.T (Cyber Team in Akihabara)
- Fay
- For Fruits Basket
- KICA-560 : Fruits Basket -Shiki- Song For Ritsuko Okazaki (Fruits Basket)
- KICA-562 : Fruits Basket Original Soundtrack, Memory for You (Fruits Basket)
- KICM-3014 : For Fruits Basket / Chiisa na Inori (Fruits Basket)
- KICS-1089 : For Ritz (Misc-Okazaki Ritsuko)
- Hello!
- I'm Always Close to You
- Melody
- Moonshadow
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- Morning Grace
- KICM-3037 : Morning Grace / Watashi no Ai wa Chiisai Keredo (Princess Tutu)
- SSX-10039 : Princess Tutu Konzert 1.AKT, part of the Limited Edition DVD Vol.1 (Princess Tutu)
- SSX-10041 : Princess Tutu Konzert 3.AKT, part of the Limited Edition DVD Vol.3 (Princess Tutu)
- Pop Step Jump!
- Rainbow Kind of Feeling
- Serenade
- KICA-560 : Fruits Basket -Shiki- Song For Ritsuko Okazaki (Fruits Basket)
- So Far, So Near
- Sunday Sundae
- The Bright Side
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- Welcome to Ritzberry Fields
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- Welcome to Ritzberry Fields 2001
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- White Land
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- aisubeki ashita
- KICA-560 : Fruits Basket -Shiki- Song For Ritsuko Okazaki (Fruits Basket)
- ame no Musique
- chiisa na inori
- KICA-560 : Fruits Basket -Shiki- Song For Ritsuko Okazaki (Fruits Basket)
- KICA-562 : Fruits Basket Original Soundtrack, Memory for You (Fruits Basket)
- KICM-3014 : For Fruits Basket / Chiisa na Inori (Fruits Basket)
- futari no sekai
- fuyu no hi
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- gekka no sanpo
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- himawari
- himitsu
- hoshizora ni oinori
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- itoshii kakera
- COCX-32653 : Melodic Hard Cure (Misc-Melocure)
- COCX-33332 : UFO Princess Valkyrie Theme+Insert Song, Almost All Compilation (UFO Princess Valkyrie)
- itsudemo hohoemi wo
- kogarashi no hodou wo hana no saku haru wo
- lycéene
- machiawase
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- meguriai
- COCX-32653 : Melodic Hard Cure (Misc-Melocure)
- COCX-33332 : UFO Princess Valkyrie Theme+Insert Song, Almost All Compilation (UFO Princess Valkyrie)
- namida ga hoo wo nagaretemo
- ryuuseigun no hi
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- shiawase
- sora no mukou ni
- sorairo
- KICA-560 : Fruits Basket -Shiki- Song For Ritsuko Okazaki (Fruits Basket)
- watashi no ai wa chiisai keredo
- KICM-3037 : Morning Grace / Watashi no Ai wa Chiisai Keredo (Princess Tutu)
- SSX-10039 : Princess Tutu Konzert 1.AKT, part of the Limited Edition DVD Vol.1 (Princess Tutu)
- SSX-10041 : Princess Tutu Konzert 3.AKT, part of the Limited Edition DVD Vol.3 (Princess Tutu)
- yasashii okurimono
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- yume wa hateshinaku
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)
- ~Humming~
- UPCH-1405 : Love & Life ~Private Works 1999-2001~ (Misc-Okazaki Ritsuko)