System Of A Down – Toxicity – Band Cover (Sulfur Breather) Mrz 9, 2016 Cover, Cover Metal, Cover Rock, Cover System Of A Down, Cover Toxicity, Down Under, Toxicity, Sulfur breather covering Toxicity by System Of A Down! Featuring Kate Brown on backup vocals! Like 0 Thanks! You've already liked this « Slipknot – Sulfur vocal cover » Vendetta/Sulfur Slipknot Cover by Bena