Formed in Melbourne, Australia in 1971, Mackenzie Theory remain one of the few totally instrumental bands in Australia to achieve recognition in the mainstream rock and pop music industry since the demise of non-vocal rock ‘n' roll and surf bands of the early 60s. In 1973, they recorded a fully instrumental album in Australia, which charted. Rob Mackenzie led the band with his inspired, ethereal guitar playing, but the band also owed much of its distinctive sound to the viola playing of Cleis Pearce. The band, which included Andy Majewski (drums) and Mike Leadabrand (bass), fo...