| Time After Time | Programming | Al『Indigo』(2004.10.27 GZCB-5001) |
| Your Song | Programming | Al『Indigo』(2004.10.27 GZCB-5001) |
| The Look Of Love | Programming | Al『Indigo』(2004.10.27 GZCB-5001) |
| Programming | Al『Annekei』(2006.09.13 ZACA-5001) |
| 大切に想うエトセトラ | Programming | Maxi『大切に想うエトセトラ』(2000.05.31 ZACL-3004) |
| 泣いて | Programming | Maxi『大切に想うエトセトラ』(2000.05.31 ZACL-3004) |
| The Truth is ... | Track | Al『It's DANCE SHUFFLE』(2008.01.16 ZCL-013) |
| Additional Keyboards, Programming | Al『Flavor of Life』(2001.10.03 GZCA-5003) |
| ALONE | Keyboards | Mini Al『LIKE A TEEN SPIRIT』(1997.07.24 MECR-20101) |
| Alone Again | keyboards | Al『FIFTH HARD CORE』1997.11.21 MECR-30107) |
| LONELY WAY | keyboards | Al『FIFTH HARD CORE』1997.11.21 MECR-30107) |
| BRAND-NEW SONG | keyboards | Al『FIFTH HARD CORE』1997.11.21 MECR-30107) |
| HEARTLAND | e.piano | Maxi『HEARTLAND』(1998.09.23 MECR-12106) |
| sha la la | organ | Maxi『HEARTLAND』(1998.09.23 MECR-12106) |
| Respectacles | Programming | Al『Loneliness』(2004.12.01 ZACL-9005) |
| 少年時代 | Synth Program | Al『ユメ-襟を濡らす涙』(2005.06.22 CRCP-40111) |
| 친구 -友だち- | Syn.Program | Maxi『私がいなくなっても』(2005.06.22 CRCP-10110) Al『Ryu Best 〜Ryuism〜』(2008.12.10 ZACL-9025) |
| Almaz | Synth Program | Al『ユメ-襟を濡らす涙』(2005.06.22 CRCP-40111) |
| なごり雪 | Synth Program | Al『ユメ-襟を濡らす涙』(2005.06.22 CRCP-40111) |
| 果樹園の道 | Additional Syn.Program | Al『おとぐすり』(2006.03.08 CRCP-40145) |
| ふるさと | Additional Syn.Program | Al『おとぐすり』(2006.03.08 CRCP-40145) |
| nobody knows | Additional Syn.Program | Maxi『nobody knows』(2006.10.18 LTCA-00035) Al『A better day』(2006.11.15 LTCA-00036) Al『Ryu Best 〜Ryuism〜』(2008.12.10 ZACL-9025) |
| 秘密 (비밀) | Syn.Program | Al『A better day』(2006.11.15 LTCA-00036) Al『Ryu Best 〜Ryuism〜』(2008.12.10 ZACL-9025) |
| MISSION IMPOSSIBLE THEME | Keyboard/Programming | Al『Theatre Of Strings』(2005.10.19 BMCS-8002) |