Before Warren Kinsella peacocked into a full-blown Liberal svengali he was creating hot messes at the Calgarian Hotel — one of the nation’s formative punk dives — with the Hot Nasties. Like a divergent australopithecine strain, The Invasion shares many tendencies with its descendants, while dabbling in different musical genera entirely: On its A-side, it establishes its ’77-proof DNA with “I am a Confused Teenager” before deteriorating into guttural discord and pre-hardcoric throat-shredding in “Invasion of the Tribbles.” B-sider “The Secret of Immortality” is yet another permutation, pairing open-air drive-thru pop with pensive ruminations on morality, life, death and Catholic guilt — foreshadowing, perhaps, Kinsella’s future sociopolitical explorations. True Grit, indeed.