| Artist name | Roles | Recordings |
|---|---|---|
| Omar (Uruguayan duo) | remixer | Eco (Omar remix / radio edit), Eco (Omar remix) |
| Ben Sidran | ||
| 谷口宗一 |
| Artist name | Roles | Recordings |
|---|---|---|
| Omar (Uruguayan duo) | remixer | Eco (Omar remix / radio edit), Eco (Omar remix) |
| Artist name | Roles | Recordings |
|---|---|---|
| Ben Sidran | vocal | Knockin' on Heaven's Door |
| 谷口宗一 | vocal | Sea |