Throughout heavy metal's dizzying evolution and splicing into countless subgenres (and subgrenres of subgenres), thrash metal's core DNA of high-tempo riffage, ripping solos and full-throttle, double-bass drumming has remained largely intact. Be it Bay Area originators, German trailblazers or modern, hi-topped upstarts, the purity of what makes a truly great thrash metal anthem is what has helped it survive as one of metal's most enduring offspring.
Still, that's not to say that thrash hasn't had a fascinating journey. Born in the shadow of Reaganomics and in stark contrast to the pretty-boy glam metal scene that had swamped the US, thrash ultimately gave us heavy metal's biggest band, Metallica, who controversially left the scene behind in the 90s only to embrace it once again in the 21st century. It's also provided some of metal's most controversial moments, most notable feuds and a host of iron-clad classic albums along the way. With the latter in mind, here are five essential albums that document thrash metal's evolution across the last four decades.
