Melbourne, 1971: radical counterculture, hippies, opposition to the Vietnam War and consumerism. The birth of Oz blues rock. Influenced by American blues after Robert Johnson, parallel to developments with Paul Butterfield, the Bluesbreakers and Canned Heat, Chain’s music also developed in distinct ways, taking on a style later referred to as Oz blues, or Oz indigo. The emergence of prog rock and the consolidation of blues rock globally made for interesting times. Rock shifted beyond the basics, in the direction of new musical forms and prefigurative politics. In this moment, Chain, four...