| Artist name | Roles | Recordings |
|---|---|---|
| DJ Manian (German music producer and DJ Manuel Reuter) | mix-DJ | We Don't Care |
| Markus Gardeweg (aka Gardeweg) | mix-DJ | I'm in Love With the DJ (David May remix) |
| Artist name | Roles | Recordings |
|---|---|---|
| NJ Threat | harpsichord | Violin Concerto No. 1 in A minor, BWV 1041: II. Andante |