| Artist name | Roles | Recordings |
|---|---|---|
| Harp Mitch & the Bluescasters | ||
| Surfer Blood | ||
| Jim James | ||
| Alicia Keys | ||
| Steven Wilson (founder of Porcupine Tree) |
| Artist name | Roles | Recordings |
|---|---|---|
| Harp Mitch & the Bluescasters | ||
| Surfer Blood | ||
| Jim James | ||
| Alicia Keys | ||
| Steven Wilson (founder of Porcupine Tree) |