Matthew Duffy is listed in the credits for the following albums:
| Year | Artist | Album | Role |
|---|---|---|---|
| 1992 | Ransom | Soul Asylum | Background Vocals |
| 1993 | Peter Shambrook | Live at Cafe Lido | Executive Producer |
| 1994 | Swirling Eddies | Zoom Daddy | Executive Producer |
| 1994 | David Zaffiro | Yesterday's Left Behind | Executive Producer, Rhythm Guitar |
| 1995 | Mad at the World | Dreamland Cafe | Executive Producer, Guitar |
| 1995 | Swirling Eddies | The Berry Vest of the Swirling Eddies | Executive Producer |
