Resum of my TDR: Thrash Metal

My research project deals with thrash metal. Thrash metal is a type of music created in USA in 1980. Thrash it's from heavy metal, hardcore punk and with roots of speed metal. One of the causes of the birth of thrash is that at the end of the decade of '70 birth a new type of metal, glam metal and some people glam metal was an insult for metal and this rage was expressed in his music. Thrash is a kind very strong and fast. The representatives groups of this music are MegadetH, Metallica, Slayer and Anthrax. I explain the story of thrash, the predecents, the origen, why and caracteristics. The final is an analysis and I transalte 8 songs. I comment the songs and explain the subject.
Keywords: music kinds, groups of music, euphoria, inconformisme and rage