Death metal vocals are often guttural roars, grunts, snarls, and low gurles colloquially known as death growls. Death growling is mistakenly thought to be a form of using the lowest vocal register known as vocal fry, however vocal fry is actually a form of overtone screaming and true death growling is in fact created by an altogether different technique. Attempting to growl using a screaming technique will result in serious damage to the vocal cords.The style is sometimes referred to as Cookie Monster vocals, tongue-in-cheek, due to the vocal similarity to the voice of the popular Sesame Street character of the same name.Although often criticized, death growls serve the aesthetic purpose of matching death metal's agressive lyrical content.High-pitched screaming is also commonly utilized in death metal, being heard in songs by Death, Exhumed, Dying Fetus, Cannibal Corpse, and Deicide. Often death metal singers will alternate between shrieks and growls in order to create a contrasting effect.
The lyrical themes of death metal may invoke slasher film-stylized violence,but may also extend to topics like Satanism, anti-religion, occultism, mysticism,philosophy, and Politics.Although violence may be explored in various other genres as well, death metal may elaborate on the details of extreme acts, including mutilation, dissection, torture, rape and necrophilia. Sociologist Keith Kahn-Harris commented this apparent glamorization of violence may be attributed to a "fascination" with the human body that all people share to some degree, a fascination which mixes desire and disgust.Heavy metal author Gavin Baddeleyalso stated there does seem to be a connection between "how acquainted one is with their own mortality" and "how much they crave images of death and violence" via the media.Additionally, contributing artists to the genre often defend death metal as little more than an extreme form of art and entertainment, similar tohorror films in the motion picture industry.This explanation has brought such musicians under fire from activists internationally, who claim that this is often lost on a large number of adolescents, who are left with the glamorization of such violence without social context or awareness of why such imagery is stimulating.
According to Alex Webster, bassist of Cannibal Corpse, "The gory lyrics are probably not, as much as people say,from being mainstream. Like, 'death metal would never go into the mainstream because the lyrics are too gory?' I think it's really the music, because violent entertainment is totally mainstream."