Helium.com | Music Genres, Trends & Scenes | The history of heavy metal http://www.helium.com/knowledge/116141-the-history-of-heavy-metal.xml Helium.com > Music Genres, Trends & Scenes > The history of heavy metal en-us Copyright Helium.com Mon, 05 May 2008 19:39:55 GMT Mon, 05 May 2008 19:39:55 GMT Heavy metal (often referred to simply as metal) is a genre of rock music that developed in the late 1960s and early 1970s, Thanks to bands such as ... http://www.helium.com/items/1657962-heavy-metal Sat, 21 Nov 2009 14:55:04