Urban Dictionary: SDBM
Suicidal/Depressive Black Metal (SDBM/DSBM) A subgenre of Black Metal which focuses on themes of suicide, antihumanity, selfmutilation, negative energy, and emotional imbalance or unrest. Some "well known" bands in this genre include: Xasthur, Burzum, Silencer, Make A Change... Kill Yourself, and Nocturnal Depression.