Drone Metal is a subgenre of heavy metal music characterized by its slow tempos, extended song structures, and a focus on sustained, repetitive sounds. It often incorporates elements from drone music, emphasizing long, continuous tones and minimalistic compositions. The genre typically features heavy use of electric guitars, bass, and effects pedals to create a thick, immersive sound. Thematically, Drone Metal often explores dark and atmospheric subjects, drawing inspiration from genres like doom metal and ambient music. Bands such as Sunn O))), Earth, and Boris are notable contributors to the genre, pushing the boundaries of traditional metal with their experimental approaches and unique sonic landscapes.