| Musician | Appearances |
|---|---|
| Michael "Flea" Balzary | 1 album |
| Nuno Bettencourt | 1 album |
| Dan Chase | 1 album |
| Kenneth Crouch | 1 album |
| Suze DeMarchi | 1 album |
| Peter DiStefano | 1 album |
| Fergie Duhamel | 1 album |
| Etty Lau Farrell | 1 album |
| Perry Farrell | 1 album |
| Kevin Figueiredo | 1 album |
| John Frusciante | 1 album |
| Joey Heredia | 1 album |
| Peter Hook | 1 album |
| Milen Kirov | 1 album |
| Jamie Mahoberac | 1 album |
| Jim Morrison | 1 album |
| Tim Pierce | 1 album |
| Carl Restivo | 1 album |