premise: Heavy Metal music is a genre of rock paintings.
hypothesis: Heavy Metal is an American science fiction and fantasy comics magazine , known primarily for its blend of dark fantasy/science fiction and erotica . Heavy metal ( or simply metal ) is a genre of rock music that developed in the late 1960s and early 1970s , largely in the United Kingdom and the United States . Nu metal ( also known as nü-metal and ) is a form of that combines elements of with elements of other music genres such as hip hop , alternative rock , funk and grunge . Nu metal is one of the key genres of the New Wave of American Heavy Metal .