| 01/07/1999 | Eternal Memories | |
|
1. | Eternal Memories |
| 2. | FLY AWAY | |
| 3. | FLY AWAY (acappella) | |
| 4. | Eternal Memories (Instrumental) | |
| 08/09/1999 | TEENAGE UNIVERSE ~Chewing Gum Baby~ | |
|
1. | TEENAGE UNIVERSE ~Chewing Gum Baby~ |
| 2. | TEENAGE UNIVERSE ~Chewing Gum Baby~ (Remix) | |
| 3. | TEENAGE UNIVERSE ~Chewing Gum Baby~ (Instrumental of Remix) | |
| 03/11/1999 | Komichi no Hana | |
|
1. | Komichi no Hana (こみちの花) |
| 2. | Komichi no Hana (Instrumental) (こみちの花) | |
| 3. | Good Morning Sue | |
| 23/03/2000 | Shadows of Desire | |
|
1. | Shadows of Desire |
| 2. | Fly Away (Original TV Version) | |
| 3. | Shadows of Desire (Instrumental) | |
| 09/05/2001 | Girl's Night | |
|
1. | Girl's Night |
| 2. | Girl's Night (Layer 7 Remix) | |
| 3. | Make Me Whole | |
| 04/07/2001 | Ex-Boyfriend | |
|
1. | Ex-Boyfriend feat. VERBAL (m-flo) |
| 2. | Ex-Boyfriend (AKIRA'S googolplex REMIX) feat. VERBAL (m-flo) | |
| 3. | Time After Time | |
| 28/11/2001 | think of U | |
|
1. | think of U |
| 2. | Attitude | |
| 3. | think of U (remix) | |
| 07/08/2002 | hard to say | |
|
1. | hard to say (feat. SORA3000 & SPHERE OF INFLUENCE) |
| 2. | think of U (KZ Future Disco Mix) | |
| 3. | hard to say (Instrumental) | |
| 23/10/2002 | Girl U Love | |
|
1. | Girl U Love |
| 2. | hard to say (TinyVoice,Production Remix) | |
| 3. | hard to say (SPC FINEST Remix) | |
| 22/01/2003 | Boyfriend -part II- | |
|
1. | Boyfriend -part II- |
| 2. | Boyfriend (MAESTRO-T Remix) | |
| 3. | Boyfriend (Nice & Smooth Version) | |
| 18/06/2003 | I LIKE IT | |
|
1. | I LIKE IT |
| 2. | OVER THE RAINBOW | |
| 3. | REEEPLAY! (by DJ HASEBE) | |
| 22/10/2003 | Candy | |
|
1. | Candy |
| 2. | hard to say (acoustic version) | |
| 3. | Eternal Memories (acoustic version) | |
| 27/11/2003 | Can't be Stopped | |
|
1. | Can't be Stopped |
| 2. | Boyfriend (acoustic version) | |
| 3. | Can't be Stopped ~TIL THE SUN COMES UP~ | |
| 12/05/2004 | Motherland | |
|
1. | Motherland |
| 2. | AS IT BEGAN | |
| 3. | Motherland (Instrumental) | |
| 17/11/2004 | Bye My Darling! | |
|
1. | Bye My Darling! |
| 2. | flowers | |
| 3. | Mirai no Chizu (未来の地図) | |
| 26/01/2005 | Kiss | |
|
1. | Kiss |
| 2. | got to move on | |
| 3. | Sweet friends | |
| 4. | Kiss (Instrumental) | |
| 18/05/2005 | Koi ni Ochitara | |
|
1. | Koi ni Ochitara (恋におちたら) |
| 2. | LOVE it TAKE it | |
| 3. | BET YOU DON'T KNOW (English Version) | |
| 4. | Koi ni Ochitara (恋におちたら) (Instrumental) | |
| 05/10/2005 | Two As One | |
|
1. | Two As One (Crystal Kay x CHEMISTRY) |
| 2. | Namida ga Afurete mo (涙があふれても) | |
| 3. | MY EVERYTHING (English Version) | |
| 4. | Two As One (Instrumental) (Crystal Kay X CHEMISTRY) | |
| 08/02/2006 | Kirakuni / Together | |
|
1. | Kirakuni |
| 2. | Together | |
| 3. | Koi ni Ochitara (Kut Remix) (恋におちたら) | |
| 4. | Kirakuni (Instrumental) | |
| 17/01/2007 | Kitto Eien ni (きっと永遠に) | |
|
1. | Kitto Eien ni (きっと永遠に) |
| 2. | As One | |
| 3. | Kitto Eien ni (きっと永遠に) (STUDIO APARTMENT REMIX) | |
| 4. | As One (REMIX) | |
| 5. | Kitto Eien ni (きっと永遠に) (Instrumental) | |
| 28/02/2007 | Konna ni Chikaku de... (こんなに近くで...) | |
|
1. | Konna ni Chikaku de... (こんなに近くで...) |
| 2. | FEEL | |
| 3. | Konna ni Chikaku de... -KZ Future Disko Remix- (こんなに近くで...) | |
| 4. | FEEL -Singo.S Remix- | |
| 5. | Konna ni Chikaku de... (こんなに近くで...) (Instrumental) | |
| 16/05/2007 | Anata no Soba de (あなたのそばで) | |
|
1. | Anata no Soba de (あなたのそばで) |
| 11/06/2008 | Namida no Saki ni (涙のさきに ) | |
|
1. | Namida no Saki ni (涙のさきに) |
| 2. | Girl Move On | |
| 3. | Dream World -SOIDOG MIX- | |
| 4. | Namida no Saki ni -SOIDOG MIX- (涙のさきに) | |
| 5. | Namida no Saki ni (Instrumental) (涙のさきに) | |
| 16/07/2008 | ONE (Normal Edition) | |
|
1. | ONE |
| 2. | Suki (すき) | |
| 3. | ONE CORNELIUS Remix | |
| 4. | ONE DEXPISTOLS Remix | |
| 5. | ONE (Instrumental) | |
| 16/07/2008 | ONE (Pokémon Edition) | |
|
1. | ONE |
| 2. | ONE with Pikachu & Shaymin (ピカチュウ&シェイミ) | |
| 3. | ONE (Instrumental) | |
| 15/12/2008 | Deaeta Kiseki (出会えた奇跡) (Digital) | |
|
1. | Deaeta Kiseki (出会えた奇跡) |
| 12/08/2009 | After Love -First Boyfriend- feat. KANAME (CHEMISTRY) / Girlfriend feat. BoA (Digital) | |
|
1. | After Love -First Boyfriend- feat. KANAME (CHEMISTRY) |
| 2. | Girlfriend feat. BoA | |
| 3. | Deaeta Kiseki (出会えた奇跡) | |
| 4. | After Love -First Boyfriend- feat. KANAME (CHEMISTRY) (Instrumental) | |
| 5. | Girlfriend feat. BoA (Instrumental) | |
| 24/11/2010 | Journey ~Kimi to Futari de~ (Journey ~君と二人で~) (Digital) | |
|
1. | Journey ~Kimi to Futari de~ (Journey ~君と二人で~) |
| 2. | HOLD ON | |
| 3. | Journey ~Kimi to Futari de~ (Journey ~君と二人で~) (Instrumental) | |
| 14/12/2011 | Superman (CD) | |
|
1. | Superman |
| 2. | Love Road | |
| 3. | Superman (Piano ver.) | |
| 4. | Superman (Instrumental) | |
| 5. | Love Road (Instrumental) | |
| 14/12/2011 | Superman (CD+DVD) | |
|
1. | Superman |
| 2. | Love Road | |
| 3. | Superman (Piano ver.) | |
| 4. | Superman (Instrumental) | |
| 5. | Love Road (Instrumental) | |
| DVD: | ||
| 1. | Superman (PV) | |
| 2. | Superman (Making of) | |
| 14/03/2012 | Delicious na Kinyoubi (デリシャスな金曜日) / Haru Arashi (ハルアラシ) (CD) | |
|
1. | Delicious na Kinyoubi (デリシャスな金曜日) |
| 2. | Haru Arashi (ハルアラシ) | |
| 3. | Delicious na Kinyoubi (デリシャスな金曜日) (Instrumental) | |
| 4. | Haru Arashi (ハルアラシ) (Instrumental) | |
| 14/03/2012 | Delicious na Kinyoubi (デリシャスな金曜日) / Haru Arashi (ハルアラシ) (CD+DVD) | |
|
1. | Delicious na Kinyoubi (デリシャスな金曜日) |
| 2. | Haru Arashi (ハルアラシ) | |
| 3. | Delicious na Kinyoubi (デリシャスな金曜日) (Instrumental) | |
| 4. | Haru Arashi (ハルアラシ) (Instrumental) | |
| DVD: | ||
| 1. | Delicious na Kinyoubi (デリシャスな金曜日) (PV) | |
| 2. | Delicious na Kinyoubi (デリシャスな金曜日) (Making of) | |
| 06/06/2012 | Forever (CD+DVD) | |
|
1. | Forever |
| 2. | Forever (SKY HIGH REMIX) | |
| 3. | Haru Arashi (ハルアラシ) (BONEBOX REMIX) | |
| 4. | Forever (Instrumental) | |
| 13/06/2012 | Take It Outside (Digital) | |
|
1. | Take It Outside |
| 20/06/2012 | Memory Box (Digital) | |
|
1. | Memory Box |
| 27/02/2013 | My Heart Beat (Digital) | |
|
1. | My Heart Beat |
| 2. | Kaze no Kanata (風の彼方) | |
| 10/04/2015 | THE LIGHT (Digital) | |
|
1. | THE LIGHT |
| 19/04/2015 | Kimi ga Ita Kara (君がいたから) (Digital) | |
|
1. | Kimi ga Ita Kara (君がいたから) |
| 03/06/2015 | Kimi ga Ita Kara (君がいたから) (CD) | |
|
1. | Kimi ga Ita Kara (君がいたから) |
| 2. | THE LIGHT | |
| 3. | My Heart Beat | |
| 4. | Monologue | |
| 5. | Kimi ga Ita Kara (君がいたから) (Instrumental) | |
| 6. | THE LIGHT (tofubeats Remix) | |
| 03/06/2015 | Kimi ga Ita Kara (君がいたから) (CD+DVD) | |
|
1. | Kimi ga Ita Kara (君がいたから) |
| 2. | THE LIGHT | |
| 3. | My Heart Beat | |
| 4. | Monologue | |
| 5. | Kimi ga Ita Kara (君がいたから) (Instrumental) | |
| 6. | THE LIGHT (tofubeats Remix) | |
| DVD: | ||
| 1. | Kimi ga Ita Kara (君がいたから) (PV) | |
| 2. | Kimi ga Ita Kara (君がいたから) (Making Video) | |
| 16/09/2015 | REVOLUTION (Crystal Kay feat. Amuro Namie) (CD) | |
|
1. | REVOLUTION |
| 2. | Shooting Star | |
| 3. | hard to say (MSG version) | |
| 4. | REVOLUTION (PKCZ Remix feat. SWAY) | |
| 5. | REVOLUTION (Instrumental) | |
| 16/09/2015 | REVOLUTION (Crystal Kay feat. Amuro Namie) (CD+DVD) | |
|
1. | REVOLUTION |
| 2. | Shooting Star | |
| 3. | hard to say (MSG version) | |
| 4. | REVOLUTION (PKCZ Remix feat. SWAY) | |
| 5. | REVOLUTION (Instrumental) | |
| DVD: | ||
| 1. | REVOLUTION (PV) | |
| 2. | REVOLUTION (Making of) | |
| 04/11/2015 | Nandodemo (何度でも) (Digital) | |
|
1. | Nandodemo (何度でも) |
| 23/03/2016 | Sakura (サクラ) (CD) | |
|
1. | Sakura (サクラ) |
| 2. | Waiting For You | |
| 3. | Forever Young | |
| 4. | Sakura (サクラ) (Instrumental) | |
| 23/03/2016 | Sakura (サクラ) (CD+DVD) | |
|
1. | Sakura (サクラ) |
| 2. | Waiting For You | |
| 3. | Forever Young | |
| 4. | Sakura (桜) (Instrumental) | |
| DVD: | ||
| 1. | Sakura (サクラ) (PV) | |
| 2. | Sakura (サクラ) (Drama Video) | |
| 3. | Sakura (サクラ) (Making of) | |
| 01/06/2016 | Waiting For You (CM Version) (Digital) | |
|
1. | Waiting For You (CM Version) |
| 14/09/2016 | Lovin' You (CD) | |
|
1. | Lovin' You |
| 2. | Silent Goodbye | |
| 3. | Suki (すき) | |
| 14/09/2016 | Lovin' You (CD+DVD) | |
|
1. | Lovin' You |
| 2. | Silent Goodbye | |
| 3. | Suki (すき) | |
| DVD: | ||
| 1. | Lovin' You (PV) | |
| 2. | Lovin' You (Making of) | |
| 17/02/2017 | Faces (Digital) | |
|
1. | Faces |
| 2. | REVOLUTION (PKCZ® Remix feat. SWAY / Club Citta' Live) | |
| 15/03/2017 | Faces (Digital With Message From CK) | |
|
1. | Faces |
| 2. | Faces Message From CK | |
| 3. | REVOLUTION (feat. SWAY) [PKCZ(R) Remix / Club Citta' Live] | |
| 4. | REVOLUTION Message From CK | |
| 19/04/2018 | Shiawase tte. (幸せって。) (Digital) | |
|
1. | Shiawase tte. (幸せって。) |
| 06/11/2019 | Beautiful (Digital) | |
|
1. | Beautiful |
| 18/03/2020 | Sangatsu Kokonoka (3月9日) (Digital) | |
|
1. | Sangatsu Kokonoka (3月9日) |
| 28/08/2020 | Utautai no Ballad (歌うたいのバラッド) (Digital) | |
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1. | Utautai no Ballad (歌うたいのバラッド) |
| 11/12/2020 | I LOVE... (Digital) | |
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1. | I LOVE... |
| 05/11/2021 | Hitori ja Naikara (ひとりじゃないから) (Digital) | |
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1. | Hitori ja Naikara (ひとりじゃないから) |
| 10/11/2021 | STEADY (Digital) | |
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1. | STEADY |
| 18/11/2021 | Say My Name (TETSU & Crystal Kay) (Digital) | |
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1. | Say My Name |
| 2. | Say My Name (Extended Mix) | |
| 06/07/2022 | Gimme Some (Crystal Kay & Daichi Yamamoto) (Digital) | |
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1. | Gimme Some |
| 11/11/2022 | No Pressure feat. VivaOla (Digital) | |
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1. | No Pressure feat. VivaOla |
| 07/12/2022 | Love me (Digital) | |
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1. | Love me |
| 03/02/2023 | Start Again (Digital) | |
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1. | Start Again |
| 17/02/2023 | Spark (Digital) | |
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1. | Spark |
| 29/01/2024 | That Girl (Digital) | |
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1. | That Girl |
| 22/11/2024 | Love Myself (Digital) | |
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1. | Love Myself |
| 23/02/2014 | Busy Doing Nothing (Digital) | |
|
1. | Busy Doing Nothing |
| 06/05/2014 | Rule Your World (Digital) | |
|
1. | Rule Your World |
| 13/08/2014 | Dum Ditty Dumb (Digital) | |
|
1. | Dum Ditty Dumb |
| 15/02/2001 | LOST CHILD (Hiroshi Fujiwara + Shinichi Osawa feat. Crystal Kay) | |
|
1. | LOST CHILD (Original Version) |
| 2. | LOST CHILD (Orchestra Version) | |
| 3. | LOST CHILD (Radio Edit) | |
| 4. | LOST CHILD (Instrumental) | |
| 00/00/2002 | EQUIS.EX.X PT2 (D.O.I. REMIX) / FEEL THE SAME ~OLD NICK VER.(SUPER HONEY DIP REMIX)~REMIX BY DJ HASEBE (Vinyl) | |
|
1. | EQUIS.EX.X PT2 (D.O.I. REMIX) / D.O.I feat.M.O.S.A.D. |
| 2. | EQUIS.EX.X PT2~D.O.I. REMIX-INSTRUMENTAL- / D.O.I feat.M.O.S.A.D. | |
| 3. | FEEL THE SAME ~OLD NICK VER.(SUPER HONEY DIP REMIX)~REMIX BY DJ HASEBE / DJ WATARAI feat.BIG-O & CRYSTAL KAY | |
| 4. | FEEL THE SAME ~OLD NICK VER.(SUPER HONEY DIP REMIX)~REMIX BY DJ HASEBE-INSTRUMENTAL / DJ WATARAI feat.BIG-O & CRYSTAL KAY | |
| 18/06/2003 | REEEWIND! (m-flo loves Crystal Kay) (CD) | |
|
1. | REEEWIND! |
| 2. | DO U LIKE IT? (Remix by Fantastic Plastic Machine) | |
| 3. | gET oN | |
| 18/06/2003 | I LIKE IT / REEEWIND! (m-flo loves Crystal Kay) (Vinyl) | |
|
- | Side A: |
| 1. | REEEWIND! | |
| 2. | REEEPLAY! (Remix by DJ HASEBE) | |
| 3. | REEEWIND!(Instrumental) | |
| - | Side B: | |
| 4. | I LIKE IT | |
| 5. | DO U LIKE IT? (Remix by Fantastic Plastic Machine Extended Mix) | |
| 6. | I LIKE IT (Instrumental) | |
| 13/04/2011 | m-flo loves Crystal Kay - gET oN! (THE SUITBOYS Remix) (Digital Single) | |
|
1. | gET oN! (THE SUITBOYS Remix) |
| 11/04/2012 | TEE - Answer (Digital Single) | |
|
1. | Answer / TEE with Crystal Kay |
| 2. | I Wanna Know | |
| 3. | Stand Up! | |
| 30/05/2012 | Far East Movement - Where the Wild Things Are (feat. Crystal Kay) (Digital) | |
|
1. | Where the Wild Things Are (feat. Crystal Kay) |
| 27/06/2012 | Where the Wild Things Are (Remixes) feat. Crystal Kay (Digital) | |
|
1. | Where the Wild Things Are (Japan Radio Edit) feat. Crystal Kay |
| 2. | Where the Wild Things Are (Guena LG Club Remix) feat. Crystal Kay | |
| 3. | Where the Wild Things Are (Supasound Club Remix) feat. Crystal Kay | |
| 4. | Live My Life (feat. Justin Bieber) (Stereotypes Remix) | |
| 25/07/2012 | BRADBERRY ORCHESTRA - Physical feat. Suga Shikao, Crystal Kay & Salyu (Digital Single) | |
|
1. | Physical feat. Suga Shikao, Crystal Kay & Salyu |
| 10/10/2012 | Lionel Richie - Endless Love (feat. Crystal Kay) (Digital Single) | |
|
1. | Endless Love (feat. Crystal Kay) |
| 07/11/2012 | Lovin' You (ラヴィン・ユー) (Shimizu Shota, Crystal Kay, Mummy-D, SEAMO, Dohzi-T ) (Digital) | |
|
1. | Lovin' You (ラヴィン・ユー) / Shimizu Shota, Crystal Kay, Mummy-D, SEAMO, Dohzi-T |
| 2. | Lovin' You (ラヴィン・ユー) (Instrumental) | |
| 28/04/2017 | PKCZ - PLAY THAT feat.Tosaka Hiroomi,Crystal Kay,CRAZYBOY (Digital) | |
|
1. | PLAY THAT feat.Tosaka Hiroomi,Crystal Kay,CRAZYBOY |
| 31/08/2018 | Hot Like You (Fire) [feat. Jimmy Cozier & Crystal Kay] (Digital) | |
|
1. | Hot Like You (Fire) [feat. Jimmy Cozier & Crystal Kay] (Original) |
| 2. | Hot Like You (Fire) [feat. Jimmy Cozier & Crystal Kay] (Marley Marl Remix) | |
| 3. | Hot Like You (Fire) [feat. Jimmy Cozier & Crystal Kay] (Chris Sammarco Deep House Remix) | |
| 05/12/2018 | chay feat. Crystal Kay - Anata no Shiranai Watashitachi (あなたの知らない私たち) (CD) | |
|
1. | Anata no Shiranai Watashitachi (あなたの知らない私たち) feat. Crystal Kay |
| 2. | Ato Mousukoshi (あともう少し) | |
| 3. | Kiss me (-Xmas version-) | |
| 05/12/2018 | chay feat. Crystal Kay - Anata no Shiranai Watashitachi (あなたの知らない私たち) (CD+DVD) | |
|
1. | Anata no Shiranai Watashitachi (あなたの知らない私たち) feat. Crystal Kay |
| 2. | Ato Mousukoshi (あともう少し) | |
| 3. | Kiss me (-Xmas version-) | |
| DVD: | ||
| - | 2017/08/19 chay Tour 2017 "chayTEA" Final Kouen @ Showa Joshi Daigaku Hitomi Kinen Koudou: | |
| 1. | Koi no Hajimari wa Itsumo Totsuzen ni (恋のはじまりはいつも突然に) | |
| 2. | Unmei no I Love You (運命のアイラブユー) | |
| 3. | 12gatsu no Ame (12月の雨) | |
| 4. | Kiss me | |
| 5. | Be OK! | |
| 6. | Summer Darling | |
| 7. | Anata ni Koi wo Shite Mimashita (あなたに恋をしてみました) | |
| 8. | Sorede Shiawase (それでしあわせ) | |
| 09/06/2022 | BSMNTPRTY, Crystal Kay & Niko Brim - Just For One Night (Digital) | |
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1. | Just For One Night |
| 30/04/2025 | MA55IVE THE RAMPAGE - REEEMINDER! feat. Crystal Kay (CD) | |
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1. | REEEMINDER! feat. Crystal Kay |
| 2. | Kimi no Tokomade (キミノトコマデ) | |
| 3. | MY PRIDE | |
| 4. | Illumination (イルミネーション) | |
| 5. | REEEMINDER! feat. Crystal Kay (Instrumental) | |
| 6. | Kimi no Tokomade (キミノトコマデ) (Instrumental) | |
| 7. | MY PRIDE (Instrumental) | |
| 8. | Illumination (イルミネーション) (Instrumental) | |
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