Speed metal

Speed metal is a subgenre of heavy metal music that originated in the late 1970s from new wave of British heavy metal (NWOBHM) roots. It is described by AllMusic as "extremely fast, abrasive, and technically demanding" music. It is usually considered less abrasive and more melodic than thrash metal. However, speed metal is usually faster and more aggressive than traditional heavy metal, also showing more inclination to virtuoso soloing and featuring short instrumental passages between couplets.