Integrity, Systems Overload
The album that created "metal-core" — Avenged Sevenfold fans, pick this up
Though they originally formed in the late '80s, Integrity's brand of metal-leaning hardcore didn't come to semi-popularity until the mid '90s, at which point the Cleveland-based act scared the bejesus out of most of Victory's teenage fans. With their fourth album, Systems Overload, the band top-loaded their songs with frantic solos and singer Dwid Hellion's guttural howls, unintentionally creating a niche that would later become known as "metalcore." These days, artists like Avenged Sevenfold have taken this sound to mainstream audiences, but underground historians will justly point out that Integrity were the genre's pioneers.