Original: Hanneman has contributed both lyrical and musical material to every Slayer album and wrote the songs '' Raining Blood '' , '' War Ensemble '' '' South of Heaven '' '' Seasons in the Abyss '' and '' Angel of Death '' , which are played at almost every live Slayer show .
Simplified: Hanneman writes both words and music for Slayer . Some of his songs include : '' Raining Blood '' , '' War Ensemble '' , '' Seasons in the Abyss '' and '' Angel of Death . ''