Performances
John has performed on in our database.
| Year | Album | Credits | |
|---|---|---|---|
| 1978 | Black Sabbath Never Say Die! |
Harmonica | |
Production
John has produced or co-produced in our database.
Collaborations
John has recorded with : Don Airey, Geezer Butler, Tony Iommi, Ozzy Osbourne, and Bill Ward.