Of all rock & roll’s myriad varieties, heavy metal is essentially the most extreme in terms of quantity, machismo, and theatricality. There are quite a few stylistic variations on heavy metallic’s core sound, but they’re all tied together by a reliance on loud, distorted guitars (usually enjoying repeated riffs) and simple, pounding rhythms. Heavy metallic has been controversial almost all through its existence — critics historically dismissed the music as riddled with over-the-prime adolescent theatrics, and conservative groups have usually protested what they perceive as evil lyrical content material. Still, regardless of — or maybe due to — those difficulties, heavy metal has change into probably the most persistently widespread types of rock music ever created, able to adapt to the times yet keep its core enchantment intact. For all its standing as America’s rebellion soundtrack of selection, heavy metallic was largely a British creation.