Appeared as guest vocalist for Enthroned on "Towards the Skullthrone of
Satan", on Hammerfall's "Chapter V: Unbent, Unbowed, Unbroken" (Knights
of the 21st Century) and on the Probot CD. He also did backing vocals
on Cradle of Filth's "Dusk and Her Embrace" (Haunted Shores) and
Massacre's "Inhuman Condition".