System of a Down is made up of four Los Angelenos of Armenian descent. This spring, they'll play their first-ever concert in their ethnic homeland. Frank Maddocks/Courtesy of the artist hide caption

itoggle caption Frank Maddocks/Courtesy of the artist

Noah Wall recorded Live at Guitar Center in Manhattan, but really, it could have been in any showroom. Courtesy of Guitar Center hide caption

itoggle caption Courtesy of Guitar Center

"In the metal community, there's a fascination with the tangible aspect of things," says Albert Mudrian, editor of metal magazine Decibel. Bruno Guerreiro /Courtesy of Decibel hide caption

itoggle caption Bruno Guerreiro /Courtesy of Decibel