| Artist name | Roles | Recordings |
|---|---|---|
| Hervé (UK Electronica producer, songwriter & DJ) | remixer | Licky (Work It Out) (Herve Goes Low remix) |
| Santigold | vocal | Licky (Work It Out) (Herve Goes Low remix) |
| Artist name | Roles | Recordings |
|---|---|---|
| Kate & Anna McGarrigle | vocal | Johnny's Gone to Hilo |
| Martha Wainwright | vocal | Proserpina |