| Star rain (Tracy Remix) | Modification of Key Sounds Label |
| Gentle Jena -Vocal Edit ver- | アニメ「planetarian」Original SoundTrack |
| Alb-Ion | Bestie |
| 僕らの旅 | circle of fifth |
| そこに、きみがいるだけで。 | FLOWiNG AROUND |
| snow white | Bestie |
| 届けたいメロディ (Short Ver) | Harmonia Original Soundtrack |
| Orpheus ~君と奏でる明日への诗~ Ayaka Ver. | circle of fifth |
| Perseids | circle of fifth |
| Believing | Bestie |
| Days of promise | I've × Key Collaboration Album |
| Rolling Star☆彡 | I've × Key Collaboration Album |
| 水の旅人 | nature couleur |
| 星屑 Evolution! | nature couleur |
| 夕暮れ小径 | nature couleur |
| search for the future | nature couleur |
| 明日への黙示録 | nature couleur |
| 君への勇気 | nature couleur |
| デュアル・ムーン - 北沢綾香 | nature couleur |
| First Twinkle | GUMIN WORKS |
| First Twinkle (feat. 北沢綾香) | GUMIN WORKS |
| 夕暮れ小径 | TOMOHIRO TAKESHITA BEST WORKS「World Hitchhiker! 2」 |
| Eternal Summer | DanceDanceRevolution A Original Soundtrack |
