Guest Appearances

• 1983 – Heaven's "Where Angels Fear to Tread" (wrote the music for "Boy's Night Out"

• 1989 – Dirty Looks' "Turn of the Screw"  (featured on "L.A. Anna" and co-writer on "L.A. Anna" and "Turn of the Screw")

• 1995 – Sun Red Sun's "Sun Red Sun"

• 1998 – Joe Lynn Turner's "Hurry Up and Wait" (featured guitar solo on track "Guilty Heart", backing vocals on ""Game of Rock 'n' Roll")

• 2002 – John West's "Earthmaker" album (guitars on all songs and co-writing)

• 2002 – Doro's "Fight" (featured on the tracks "Salvaje" and "Descent")

• 2002 – T.M. Stevens' "Shocka Zooloo" (featured on the tracks "Thrash" and "No Good W/Out The Bad

• 2003 – Circle II Circle's "Watching in Silence" (featured on the tracks and co-writer of "Out of Reach", "Sea of White" and "Face to Face", co-writer of "Into the Wind")

• 2003 – "Slave to the Power: The Iron Maiden Tribute" (featured on the track "Run To The Hills")

• 2003 – Jimmy Sturr and His Orchestra's "Rockin' Around with Jimmy" (featured on the track "Detour")

• 2004 – Jon Oliva's Pain's "'Tage Mahal" (co-writer "The Nonsensible Ravings of the Lunatic Mind"

• 2004 – Doro's "Classic Diamonds" – The DVD

• 2005 – Doro's "In Liebe und Freundschaft"

• 2005 – Circle II Circle's "The Middle of Nowhere" (co-writer "Open Season", "Cynical Ride", and "Faces in the Dark")

• 2006 – Eidolon's "The Parallel Otherworld" (featured guitar solo on track "The Eternal Call")

• 2008 – "KISS MY ANKH: A Tribute To Vinnie Vincent" (featured guitar solo on track "Ted Poley (Parody of Kiss song "Unholy")

• 2008 – Sandalinas' "Fly to the Sun" (featured on the tracks "Double Cross", "Shadows in the Rain")

• 2009 – Tim "Ripper" Owens' "Play My Game"

• 2011 – Ronnie Munroe's "Lords of the Edge" (co-writing and guitar on "Rock And A Hard Place")

• 2011 – Eternal Flight's "Diminished Reality, Elegies And Mysteries (D.R.E.A.M.S.)" (featured on the track "Goodbye")

• 2013 – Sandalinas' "Power to the People: The Raw" (featured on the track "Power to the People")

• 2013 – Artlantica's "Across the Seven Seas" (featured on the tracks "2012" and "You're Still Away")

• 2013 – Craving's "At Dawn" (featured on the track "Targaryen Wrath")

• 2013 – Infinite Staircase's "No Amends" (featured on the tracks "No Amends" and "The Things We've Done")

• 2013 – Doug Ferony's "The Best of Doug Ferony Volume 1" (featured on the track Glad I'm Livin In The USA")

• 2015 – Exxiles' "Oblovion"

• 2015 – Kyrie Ellison's "Untold Stories: The Scriptures of Sadness" (featured on the track "Foreseen Destiny")

• 2016 – Vivaldi Metal Project's "The Four Seasons"

• 2017 – Jimmy Sturr and His Orchestra's "Gonna Be Good Times" (featured on the track "Ring of Fire")

• 2018 – Vivaldi Metal Project's "The Extended Sessions"

• 2018 – Doro's "Strong and Proud" (featured on the track "Egypt (The Chains Are On)")

• 2018 – Metalville's "Metalville: 10 Years" (featured on the track "My Light")

• 2021 – Burning Witches' "The Witch of the North" (featured on the track "Hall of the Mountain King")

• 2021 – Exxiles' "Reminiscence: Act II"

• 2021 – Alta Reign's "Mother's Day" (featured on the track "Rise")

• 2021 – Reverend Jack's "A Mile From Home" (featured on the tracks  "Crawling Inside" and "No Face Race")

• 2021 – Between World's "Between Worlds" (featured on the tracks "Scent of an Angel" and "No Escape")

• 2022 – Vivaldi Metal Project's "EpiClassica"

• 2022 – Alta Reign's "Upon the Horizon" (featured on the track "Beneath the Rose")

• 2022 – Quasimodo's "Cancer City" (vocals and lyricist on the track "The Haunting of Man")

• 2022 – Ronnie Romero's "Raised on Heavy Metal" (featured on the track "The Shining")

• 2022 – John Macaluso's "The Radio Waves Goodbye" (featured on the track "Gates to Bridges")

• 2023 – Archon Angel"s "Archon Angel II" (the track "Quicksand" - songwriter)

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