| THE LAST REMNANT (Original Soundtrack) | 関戸剛 & 山中康央 | 3×Digital Media | 34 + 36 + 28 | | SQUARE ENIX | | 4988601461221 |
| The Last Remnant | 関戸剛 | 3×CD | 34 + 36 + 27 | | SQUARE ENIX | SQEX-10127, SQEX-10128, SQEX-10129 | 4988601461221 |
| チョコボと魔法の絵本シリーズ Original Soundtrack | 植松伸夫, 水田直志, 谷岡久美, 高橋雄蔵 & 関戸剛 | 2×CD | 28 + 33 | | SQUARE ENIX | SQEX-10134, SQEX-10135 | 4988601461252 |
| The 3rd Birthday Original Soundtrack | 下村陽子, 鈴木光人 & 関戸剛 | 3×CD | 23 + 27 + 16 | | SQUARE ENIX | SQEX-10217, SQEX-10218, SQEX-10219 | 4988601462099 |
| 聖剣伝説 音楽大全集 | 伊藤賢治／菊田裕樹／下村陽子／相原隆行／岩田匡治／関戸剛／祖堅正慶 | 19×CD | 27 + 40 + 8 + 44 + 19 + 21 + 20 + 29 + 25 + 21 + 33 + 23 + 32 + 19 + 14 + 27 + 22 + 7 + 1 | | SQUARE ENIX | SQEX-10249, SQEX-10250, SQEX-10251, SQEX-10252, SQEX-10253, SQEX-10254, SQEX-10255, SQEX-10256, SQEX-10257, SQEX-10258, SQEX-10259, SQEX-10260, SQEX-10261, SQEX-10262, SQEX-10263, SQEX-10264, SQEX-10265, SQEX-10266, SQEX-10267, SQEX-10268 | 4988601462419 |
| KINGDOM HEARTS 3D [Dream Drop Distance] Original Soundtrack | 下村陽子、関戸剛、石元丈晴 | 3×CD | 16 + 21 + 15 | | SQUARE ENIX , Walt Disney Records | SQEX-10304, SQEX-10305, SQEX-10306 | 4988601462716 |
| SQUARE ENIX COMPOSERS BEST/SELECTION BLACK DISK | Tsuyoshi Sekito, Naoshi Mizuta, Keiji Kawamori, Hidenori Iwasaki, Ryo Yamazaki, Takeharu Ishimoto, Hirosato Noda, Yasuhiro Yamanaka & Mitsuto Suzuki | CD | 9 | | SQUARE ENIX | SQEX-10391 | 4988601463546 |
| Final Fantasy Explorers: Original Soundtrack | 関戸剛 | CD | 42 | | SQUARE ENIX MUSIC | SQEX-10464 | 4988601464321 |
| Final Fantasy Explorers –Ultimate Box– Suppin Tracks | 関戸剛 | CD | 7 | | SQUARE ENIX | SQEX-10465 | |
| FINAL FANTASY EXPLORERS -ULTIMATE BOX- Suppin Tracks | Tsuyoshi Sekito | CD | 7 | | SQUARE ENIX | SQEX-10465 | |
| Final Fantasy Explorers –Collector’s Edition– Songs for the Journey | Tsuyoshi Sekito | CD | 20 | | SQUARE ENIX MUSIC | SQEX-10465 | 662248916606 |
| Gyromancer オリジナル・サウンドトラック | 関戸剛 | Digital Media | 26 | | SQUARE ENIX | SQEX-50015 | |
| Gyromancer Original Soundtrack | Tsuyoshi Sekito | Digital Media | 26 | | SQUARE ENIX | SQEX-50015 | |
| T.Sekito's Guitarworks Selection | 関戸剛 | Digital Media | 10 | | SQUARE ENIX | SQEX-50041 | |
| T.Sekito's Guitarworks Selection | Tsuyoshi Sekito | Digital Media | 10 | | SQUARE ENIX | SQEX-50041 | |
| T.Sekito's Guitarworks Selection 2 | 関戸剛 | Digital Media | 10 | | SQUARE ENIX MUSIC | SQEX-50059 | |
| BRAVE FENCER 武蔵伝 | 関戸剛 | 2×CD | 38 + 40 | | DigiCube | SSCX-10022 | 4517331100225 |
| Chrono Trigger Official Soundtrack: Music From Final Fantasy Chronicles | Yasunori Mitsuda, Tsuyoshi Sekito & Nobuo Uematsu | CD | 25 | | TOKYOPOP Soundtrax | TPCD 0209‐2 | 645573020927 |
| Allstar Pro-Wrestling II | 関戸剛 | CD | 38 | | | | |
| Brave Fencer "Musashiden" | 関戸剛 | 2×CD | 38 + 40 | | | | |
| The Last Remnant Premium Soundtrack | 関戸剛 | CD | 11 | | Microsoft Corporation | | |
| Brave Fencer Musashi | 関戸剛 | CD | 4 | | | | 662248998046 |
| Brave Fencer Musashi | 関戸剛 | Digital Media | 136 | | | | |
| Chocobo to Mahou no Ehon Series Original Soundtrack | 植松伸夫, 水田直志, 谷岡久美, 高橋雄蔵 & 関戸剛 | 2×(unknown) | 28 + 33 | | | | |
| KINGDOM HEARTS 3D [Dream Drop Distance] Original Soundtrack | Yôko Shimomura、Tsuyoshi Sekito、Takeharu Ishimoto | 3×(unknown) | 16 + 21 + 15 | | | | |
| Seiken Densetsu Music Complete Book | 伊藤賢治／菊田裕樹／下村陽子／相原隆行／岩田匡治／関戸剛／祖堅正慶 | 19×CD | 27 + 40 + 8 + 44 + 19 + 21 + 20 + 29 + 25 + 21 + 33 + 23 + 32 + 19 + 14 + 27 + 22 + 7 + 1 | | | | |
| The Last Remnant | Tsuyoshi Sekito | 3×(unknown) | 34 + 36 + 27 | | | | |
