| Artist name | Roles | Recordings |
|---|---|---|
| Roadrunner United | ||
| Glenn Spearman |
| Artist name | Roles | Recordings |
|---|---|---|
| Roadrunner United | ||
| Glenn Spearman |
| Artist name | Roles | Recordings |
|---|---|---|
| Roadrunner United | engineer | Army of the Sun, Independent (Voice of the Voiceless), The Dagger, The Rich Man |
| Glenn Spearman | engineer | Raga Shamwati |