Performances
Greg has performed on in our database.
| Year | Album | Credits | |
|---|---|---|---|
| 2013 | Black Label Society Unblackened |
Background Vocals | |
Production
Greg has produced or co-produced in our database.
Collaborations
Greg has recorded with : Nick Catanese, John DeServio, Derek Sherinian, Chad Szeliga, and Zakk Wylde.