Innerpartysystem (often stylized as InnerPartySystem) was an American electronic rock band. The group consisted of Patrick Nissley, Jared Piccone and Kris Barman. The band was well known for their live performance lighting largely by Andrew Nissley and videos directed by Stephen Penta.
The band was named for a term used in the George Orwell novel Nineteen Eighty-Four.
Their debut EP The Download EP was released in November 2007 and their debut self-titled album in late September 2008. As of late 2008 the band started releasing seasonal mixtapes, new remixes including Ladyhawke's track "Paris Is Burning" and Katy Perry's "Hot n Cold". In May 2009 the band digitally released the UK equivalent of The Download EP, entitled Heart of Fire.