Best known as the founder and lead vocalist of metal outfit System of a Down, Armenian-American musician and producer Serj Tankian has been a long-time staple on the rock scene with his unmistakable vocals, sense of humor, and intense political activism. Along with his Grammy-winning band, he issued three chart-topping hit albums -- Toxicity, Mezmerize, and Hypnotize -- in the early 2000s before SOAD went on indefinite hiatus. He released his first solo effort, Elect the Dead, in 2007, following with additional full-lengths (2013's Orca), concert albums (2023's Invocations), c...