| Artist name | Roles | Recordings |
|---|---|---|
| 倖田來未 | ||
| 武藤星児 | arranger | Kodocha Sanbika (Original Karaoke), Vitamin Love (Original Karaoke) |
| BoA (South Korean singer and actress) | ||
| 大塚愛 |
| Artist name | Roles | Recordings |
|---|---|---|
| 倖田來未 | ||
| 武藤星児 | arranger | Kodocha Sanbika (Original Karaoke), Vitamin Love (Original Karaoke) |
| BoA (South Korean singer and actress) | ||
| 大塚愛 |
| Artist name | Roles | Recordings |
|---|---|---|
| 武藤星児 | arranger | Kodocha Sanbika (Original Karaoke), Vitamin Love (Original Karaoke) |
| Artist name | Roles | Recordings |
|---|---|---|
| 倖田來未 | arranger, piano | MORE, Moon Crying (live version in Taiwan) |
| BoA | arranger | LAST CHRISTMAS |
| 大塚愛 | piano | 桃ノ花ビラ (スタジオライブ version) |