Tamam Shud was one of the most original and innovative Australian groups of the late '60s and early '70s. They played a very important part as pioneers of acid-rock and progressive music. The group released two acclaimed LPs, recorded independently, which have both become sought-after collector's items. The evolution of Shud was typical of many groups of the era, beginning as an instrumental band, through 'beat' pop group and psychedelia, to progressive rock. The lingering 'surf band' tag linked them with Sydney's northern beach surf culture.