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| I Can't Wait | I Know | |
| I pray | I'm Not Alone | |
| I'll be there | I WANNA BE | |
| Outro | AS IT BEGAN | |
| As One | As One REMIX | |
| A Song For You | Attitude | |
| ANOTHER BEST THING | あなたのそばで | |
| It's a crime | ITOSHIIHITO | |
| interlude〜conditioner | Interlude P.P.P. | |
| interlude〜my ex | Intro -Genesis- | |
| We Gonna Boogie | ESCALATOR | |
| Eternal Memories | Ex-Boyfriend | |
| Anytime | &BRAND-NEW | |
| Over and Over | OVER THE RAINBOW | |
| Guardian Angel | Girl's Night | |
| Girl's Night Layer 7 Remix | Girl's Night Shinichi Osawa Layer 7 Remix | |
| Girl Move On | Girl U Love | |
| 帰り道 | 片想い | |
| got to move on | C'mon Babe | |
| Kiss | Kiss (Orchestra version | |
| きっと | きっと永遠に | |
| きっと永遠に | きっと永遠に STUDIO APARTMENT REMIX | |
| 君がいれば | Cannonball | |
| Candy | Can't be Stopped （英語）／原題：TIL THE SUN COMES UP | |
| Can't be Stopped／原題：TIL THE SUN COMES UP | Can't be Stopped | |
| Can't be Stopped 〜TIL THE SUN COMES UP〜 | CURIOUS | |
| Kirakuni | Good Times | |
| Good Morning Sue | Goodbye | |
| Couldn't Care Less | KTK | |
| 恋におちたら | 恋におちたら Genki Rockets Remix | |
| 恋におちたら kut Remix | こみちの花 | |
| こんなに近くで... | こんなに近くで... - KZ Future Disko Remix | |
| 今夜はNo.1 | Journey 〜君と二人で〜 | |
| Journey 〜君と二人で〜 instrumental | Shining | |
| Shining (Jazztronik Remix) | Shadows of Desire | |
| Shooting star dust | Sugar Rain | |
| think of U | think of U (remix) | |
| think of U (KZ Future Disco Mix) | Sweet friends | |
| すき | STILL | |
| Step by Step | Snowflake | |
| ダーリンP.P.P. | Time After Time | |
| Time of Love | TIME GOES BY | |
| タカ・タカ・タカ | Cherish | |
| 月のない夜 道のない場所 | つれないギター | |
| 出会えた奇跡 | TEENAGE UNIVERSE 〜Chewing Gum Baby | |
| TEENAGE UNIVERSE 〜Chewing Gum Baby（REMIX） | Tears | |
| テレパシー | Together | |
| トゥデー・フレンド・ザ・デコレーションケーキ・かうかう・GO | トキノカケラ | |
| Dream World | Dream World SOIDOG MIX | |
| nice & slow | 涙があふれても | |
| 涙のさきに | 涙のさきに SOIDOG MIX | |
| Never say goodbye | nobody but you | |
| No More Blue Christmas' | hard to say | |
| hard to say（SPC FINEST Remix） | hard to say（TinyVoice,Production Remix） | |
| hard to say (inst.) | hard to say (TinyVoice,Production Remix) | |
| Hide'n'Seek | Bye My Darling! | |
| Butterfly's Garden | BET YOU DON'T KNOW | |
| Happy(Love Theme From "Lady Sings The Blues") | Happy 045 Xmas | |
| Happy Life | Honey Glue | |
| パパどんピ | Hands up | |
| He Will Be Mine | Hero | |
| Victoria | History | |
| FEEL | FEEL - Singo.S Remix - | |
| Fly Away Original TV Version | FLY AWAY | |
| fly to you | FLASH | |
| flowers 原題EVERY PART OF ME | flowers | |
| Baby Girl | BET YOU DON'T KNOW English Version. | |
| Help Me Out | Boyfriend acoustic version | |
| Boyfriend (80kidz Remix) | Boyfriend -partII- | |
| Boyfriend -partII／原題：What Makes Me Fall In Love | Boyfriend -partII-／原題：What Makes Me Fall In Love | |
| Boyfriend -part II -／原題：What Makes Me Fall In Love | Boyfriend (What Makes Me Fall In Love) | |
| Boyfriend 〜What Makes Me Fall In Love〜 | home girls | |
| HOLD ON | Holiday Fighter | |
| MY EVERYTHING | MY EVERYTHING（English Version) | |
| My Dear | Motherland | |
| Magic | Missin'U,baby | |
| Midnight Highway | 未来の地図 | |
| move on | MAKE YOU MINE english version. | |
| Make Me Whole | MAKE YOU MINE | |
| More Lovin' | You're my fate | |
| Last Kiss | LOVE it TAKE it | |
| LOVE or GAME | Love of A Lifetime | |
| lead me to the end | Liberty | |
| Rainy Blue Day | レッツすいかどろぼう | |
| Lonely girl | What Time Is It? | |
| ONE | ONE with ピカチュウ＆シェイミ | |
| ONE CORNELIUS REMIX | ONE DEXPISTOLS REMIX | |
| After Love -First Boyfriend- / Girlfriend | ALL YOURS | |
| Girl's Night | Color Change! | |
| Crystal Style（クリスタイル） | Call me Miss... | |
| THE BEST REMIXES of CK | C.L.L CRYSTAL LOVER LIGHT | |
| CK5 | Journey ?君と二人で? | |
| Shining | think of U | |
| NATURAL -World Premiere Album- | 涙のさきに | |
| hard to say | 4 REAL | |
| FLASH | BEST of CRYSTAL KAY | |
| LOVE SONG BEST | 637 -always and forever- | |
| ONE | ONE Pokemon Edition | |
| Ex-Boyfriend | こんなに近くで... | |
| 涙のさきに | ONE | |