My categories are: Progressive, speed, Thrash, Death, and a little Glam.
Some of my favourite bands are: Iron Maiden, Manowar, Paradise Lost, Epica, Helloween, Queensryche, judas Priest, Ozzy, Metallica, Dream Theater, Kiss, Slayer, Cannibal Corpse and Nightwish ( just saw them last week).:666: