Also known as: SOAD, システム・オブ・ア・ダウン
System of a Down is an Armenian-American heavy metal/rock band composed of lead vocalist and keyboardist Serj Tankian, guitarist Daron Malakian, bass player Shavo Odadjian and drummer John Dolmayan.
They are known for their eclectic and often unconventional music style, blending elements of various rock genres and other musical styles. Over the years, they have produced many hit songs including "Chop Suey!", "Toxicity" and "Aerials".