Matti Karki (DIS-fucking-MEMBER! Also Murder Squad, Carnage)
Martin Van Drunen (Comecon-Convergin.., Pestilence)
Craig Pillard (early Incantation)
Ross Dolan (Immolation)
Tomi Koivusaari (early Amorphis)
Barney Greenway (Napalm Death)
Joe Ptacek (early Broken Hope)
Antti Boman (Demilich)
Lord Worm (Cryptopsy)
George "Corpsegrinder" Fisher (Monstrosity, CC)
Jason O. (Infester)
Ares (Aeternus)
Chris Reifert (Autopsy)
3 Guys/whoever did vocals for (Dismembered Fetus)
Brett Hoffmann (Malevolent Creation)
John Tardy (early Obituary)
J.R. Hayes (Pig Destroyer-Prowler)
Mike van Mastrigt (early Sinister)
Gronibard fella
N.C.C fella

many more..

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