Thrash metal is a kynd o hivy metal muisic that stairtit as an affshuit o hivy metal in the late 1970s an early 1980s. The term Speed metal wis uised for this genre in the aichties, but for ordinar that nou is uised whan talkin anent Pouer metal that pits a wheen emphasis on fast playin - baunds sic as DragonForce bein guid exemplars.