| Artist name | Roles | Recordings |
|---|---|---|
| Sequoia String Quartet | ||
| Crush 40 |
| Artist name | Roles | Recordings |
|---|---|---|
| Sequoia String Quartet | ||
| Crush 40 |
| Artist name | Roles | Recordings |
|---|---|---|
| Sequoia String Quartet | vocal | Assault Attack, Empty Rooms, Jet to Jet |
| Crush 40 | vocal | Dangerous Ground |