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 the group was renamed as Cosmic Psychos. They issued their debut album, Down on the Farm, in December 1985. 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 Mulle