Cosmic Psychos are an Australian punk rock band which formed in 1977 as Spring Plains. Founding members included Ross Knight on guitar and vocals; Robbie Addington on guitar and vocals; and Steve Morrow on vocals. Australian rock music historian, Ian McFarlane, described their music as "arty kind of punk noise, somewhere between The Birthday Party and a more narcotic sounding Ramones". Late in 1984 Ross Knight the group was renamed as Cosmic Psychos. They issued their debut album, Down on the Farm, in December 1985. McFarlane felt that with Knight the group used "equal parts Stooges riffs, Ramones tempos, lashings of wah wah guitar, American 1980s hardcore attitude and a healthy dose of yobbo humour. [They] played no-frills, stripped-down punk rock". Several albums have followed and were backed by national tours and international tours to Europe and North America including festivals with Mudhoney, Nirvana, L7, Helmet and Motörhead. In 1990 Jones was replaced by Robbie Watts on guitar and vocals. By 2005 Walsh was replaced by Dean Muller (Hoss, Chris Russell's Chicken Walk) on drums. On 1 July 2006 Watts died of a heart attack, aged 47, and the band continued with John McKeering (ex-The Onyas) joining.