During those hours, when schizophrenia speaks through him, my cousin also hears the sounds of Anathema, Dismember, Obituary, Dying Fetus, Napalm Death, Venom, Suicidal Tendencies, Bathory, Overkill, Sodom, Testament, Carcass, Cephalic Carnage, Kreator, Nuclear Assault, Voivod, Judas Priest, Helloween, Possessed, Morbid Angel, Exhumed, Enslaved, Massacre, Lamb of God, White Zombie, Dark Tranquility, Autopsy, Immolation, Extreme Noise Terror, My Dying Bride, Paradise Lost, Darkthrone, Grave, Exodus, Necrophagia, Post Mortem, Decapitated, Sacramentum.
On a possibly unorthodox treatment for schizophrenia: heavy metal.
