Instruct: Classify a review into positive or negative sentiment.
Query: The harsh Roots of Black Metal

If you know anything about Bathory, you'll hear and read about Quorthon and his legacy of Bathory releases, and the undying influence which molded a world-wide sub-genre of metal.The one IMPORTANT piece of information that is constatnly left out is that of his singers. If you've sampled various Bathory tracks and albums, you'll hear a DRASTIC change in Quorthon's(founder) musical style. My favorite is that of the "ANIMAL" era!"ANIMAL" was the first Bathory vocalist. He's underated, to say the least. Just listen to any of the first 2 Bathory albums, and you'll hear an big influential factor in black metal..the vocals. Quorthon tried to replicate this sound without Animal several albums later to "return to the roots" but it was not quite the same. The production was too good.The "ANIMAL" era catured that RAW, BLACK, THRASH, EVIL signature sound that thousands of blackmetal bands the world over emulate.This is a MUST-HAVE for any fan of old-school tbrash/black metal.