In 1966, as a visual artist, he had his debut solo exhibition at a gallery and subsequently delivered Sydney's first sound and light mixed media show at the Cell Block Theatre.
[1] In July of the following year he performed a Beethoven-inspired concert, which F. R. Blanks of The Australian Jewish Times described, "the music was formally shapeless, in idiom a wild mixture, in technique visually striking and unpredictable.
[1] Australian musicologist, Ian McFarlane, felt the "heavy organ score gave the film a chilling ambience, which only enhanced the more bizarre aspects..."[1] Bourke's debut album, Wilderness Awakening (1971) was preceded by a concert at Sydney Town Hall, "Homage to Beethoven".
[1] Adrian Rawlins of Revolution caught Bourke's second performance of "Homage to Beethoven" in September 1970, at Melbourne Town Hall as part of his Peace Offering concert.
"[1] In August 1971 Bourke, and local rock band Pirana, supported Pink Floyd on the Australian leg of their Atom Heart Mother World Tour.