Extra Terrestrial Boogie is on Out of the Blue which entered the Kent album charts on 30 July 1973 and peaked at #24.
Record label of Australian release:
MacKenzie Theory formed in Melbourne in September 1971. Rob MacKenzie (lead guitar, ex-Leo & Friends, King Harvest, Great Men) and Cleis Pearce (electric viola) were the mainstays. They recorded two albums, Out of the Blue (1973) and Bon Voyage (1974) for Mushroom Records before disbanding in May 1974.
MacKenzie Theory played instrumental jazz rock with elements of John Coltrane, King Crimson, Mahavishnu Orchestra and Santana. At early gigs they supported other artists including Band of Light, Billy Thorpe & the Aztecs, Chain, Madder Lake and Spectrum.
They performed at the inaugural Sunbury Pop Festival in January 1972 and again in 1973 and 1974.
Read more: en.wikipedia.org/wiki/MacKenzie_Theory
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