Produced in Melbourne, Australia in 1971, Mackenzie Theory stay mostly of the totally instrumental rings in Australia to attain recognition within the mainstream rock and roll and pop music industry because the demise of nonvocal rock and roll ‘n’ move and surf rings of the first 60s. In 1973, they documented a completely instrumental record in Australia, which charted. Rob Mackenzie led the music group with his motivated, ethereal electric guitar playing, however the music group also owed a lot of its distinct sound towards the viola playing of Cleis Pearce. The music group, including Andy Majewski (drums) and Mike Leadabrand (bass), folded in middle-1974 when Mackenzie was awarded an Arts Council offer to study electric guitar in European countries and America. He afterwards moved to LA, USA, executing and doing documenting sessions with rising bands, providing electric guitar solo embellishments on the demonstration tapes, or documenting eastern as well as other incredible ethnic designs. Pearce transformed her skill to folk music as well as other eclectic function and she’s recorded regularly.