A celebrated New Zealand rock band whose music grew from psychedelia into hard rock during their lifetime, the Human Instinct were a tough but agile guitar group who had a long career in their homeland, as well as recording and performing in the U.K. Evolving from a Kiwi beat group called the Four Fours, the Human Instinct cut a handful of tough R&B- and freakbeat-leaning singles for Mercury in 1966 and 1967, and a pair of more adventurous psychedelic 45s for Deram in 1967 and 1968 during a sojourn in London. After returning to Auckland, they steered into hard rock with plenti...