アンダース・フリーデン
1997年 Dark Tranquillity - The Mind's I (Vocals [Mantra] on "Hedon")
1997年 Misanthrope - Visionnaire (Guest backing vocals on "Hands of the Pupetters")
1999年 Grievance - The Phantom Novels (Guest vocals on 3 tracks)
2000年 Cemetary 1213 - The Beast Divine (Guest vocals on track "AntiChrist 3000")
2007年 Caliban - The Awakening (Guest vocals on "I See The Falling Sky")
2007年 Nuclear Blast Allstars - en:Nuclear Blast All-Stars: Out of the Dark (Vocals on "Dysfunctional Hours")
2010年 Pendulum - Immersion - vocals on "Self Versus Self", performing alongside the rest of In Flames.