punk rock is the most primitive rock music-it is composed of a simple melody and three chords. The change is that punk rock will play the old rock faster and more passionately. Because some bands have a one-sided understanding of the punk music style-including the garage rock band in the 196s and The Velvet Underground, The Stooges, The New York Dolls-the punk music genre was not formally formed until the mid-197s. Many new bands in the west no longer emphasize the super-musical form that is different from the mainstream hardcore rock, but point to the essence of music. The first punk band in new york was the ramones; In London, it is represented by sex pistols. Although their musical performances are different ----the ramones are light and casual, in contrast, the pistols emphasize the expression of repeated paragraphs-these unique attempts have revolutionized the styles of American music and British music. Punk music has been low-key in the United States, and finally gave birth to the concepts of hard core rock and indie rock in the 198 s. In Britain, punk rock has become the darling of the public. Sex pistols is regarded as a serious subversion of the government and monarchy. More importantly, more and more bands have joined punk rock. Some bands almost copied pistols' original style, while others created their own new elements, such as buzzcocks' sharp rock, clash's hymn-like reggae rock, and the artistic experiments of wire and joy division. Soon, punk split into post-punk (more artistic and experimental than before), new wave (more oriental pop), and hard-core rock (a punk music that is more intense, faster and more aggressive in form). Throughout the 198 s, both Britain and the United States associated the definition of punk with hard and rock. In the early 199s, a group of punk revivalists-represented by green day and rancid-emerged from the American underground music scene. This group of new forces brought punk music back to its original style and tried to add heavy metal elements to its music.