Extreme Metal is a subgenre of heavy metal music characterized by its aggressive sound, complex structures, and intense themes. It encompasses various styles, including death metal, black metal, and thrash metal, each with unique characteristics. Extreme Metal often features fast tempos, distorted guitars, and harsh vocal techniques, such as growling and screaming. Lyrically, Extreme Metal explores dark and controversial subjects, including death, violence, and mythology. Bands like Cannibal Corpse and Mayhem are notable examples, pushing the boundaries of musical and lyrical content. This genre has a dedicated fan base and has influenced many other music styles and cultural movements.