heavy+metal+-+hard+rock — similar tags: traditional metal, heavy metal, heavy rock, nwobhm, metal, hard rock, thrash metal, power metal, southern metal, iron maiden, speed metal, classic rock, stoner metal, nwothm, stoner rock, death metal, heavy, progressive metal, glam-metal, proto-metal, melodic rock, doom metal, melodic metal, hair metal, metallica, doom, heavy psych, rock, groove metal,