The Sunbury Rock Festival was an annual Australian rock music festival held on a 620-acre private farm between Sunbury and Diggers Rest, Victoria, which was staged on the Australia Day (26 January) long weekend from 1972 to 1975. It attracted up to 45,000 patrons and was promoted by Odessa Promotion as Australia's Woodstock. The Sunbury Pop Festivals signalled the end of the hippie peace movement of the late 1960s and the beginning of the reign of pub rock. In 1975 Deep Purple were head-liners. Folklore is that a fracas developed on-stage between Deep Purple's roadies and AC/DC's roadies and members. This APP looks back at that amazing period when Deep Purple ruled the charts and the associated audiovisual material highlights the excitement and ‘innocence’ of early Australian rock festivals. A must for all Deep Purple fans and fans of rock music in general.