In the mid-'80s, thrash metal had its " Big Four" bands -- three from California (Metallica, Megadeth, & Slayer) & New York's Anthrax. In the early '90s, technical death metal's Big Four were three Florida acts -- Death, Atheist, & Cynic -- & Pestilence, from the Netherlands. The band released four albums that charted an increasingly progressive & even jazzy trip from metal out into deep space, culminating with the controversial, keyboard-dominated Spheres. The current lineup of Pestile