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System of a Down, also known by the acronym SOAD and often shortened to System, is a rock band from Southern California, formed in 1994. It consists of Serj Tankian (lead vocals, keyboards, rhythm guitar), Daron Malakian (guitar, vocals), Shavo Odadjian (bass, background vocals) and John Dolmayan (drums).

The band achieved commercial success with the release of five studio albums; from which three debuted at number one on the Billboard 200. System of a Down has been nominated for four Grammy Awards, and won the award in 2006 for Best Hard Rock Performance for the song "B.Y.O.B.". The group went on hiatus in August 2006, but reunited in November 2010, embarking on a worldwide tour in 2011.

Serj Tankian, Daron Malakian, and Shavo Odadjian all attended Rose and Alex Pilibos Armenian School while children, although because of their eight-year age difference they did not meet until 1992 while working on separate projects at the same recording studio. They formed a band named Soil with Tankian on vocals and keyboards, Malakian on vocals and guitar, Dave Hakopyan (who later played in The Apex Theory/Mt. Helium) on bass and Domingo "Dingo" Laranio on drums. The band hired Shavo Odadjian (another Rose and Alex Pilibos alumnus) as manager, although he eventually joined Soil as rhythm guitarist. After three years, only one live show, and one jam session recording, Hakopyan and Laranio quit the band, feeling that it was not going anywhere.

Joy Orbison (Born Peter O'Grady) is a DJ and producer based in London. His style is generally accepted as a coalescence of dubstep, UK funky, UK garage, and house. O'Grady achieved underground success with his debut single, "Hyph Mngo" released via Hotflush Recordings in October 2009.

O'Grady credits his uncle Ray Keith with introducing him to jungle and UK garage at a young age. At 13 he took up DJing and eventually moved into production in his 20s, using Fruity Loops to create 8-bar grime loops before developing his sound combining house, disco, and dubstep. He cites influences as diverse as J Dilla, My Bloody Valentine, GG Allin, Josef K, and The Beach Boys.

His debut single “Hyph Mngo” was called the most forward-thinking dubstep track of 2009 and received airplay, floorplay and foreplay worldwide. This was followed by “BRKLN CLLN” on O’Grady’s own Doldrums label, which he runs in tandem with partner Impey. In 2010, O'Grady released "The Shrew Would Have Cushioned The Blow" on Aus Music, an eclectic record label founded by Will Saul and Fink.