Add Yahoo as a preferred source to see more of our stories on Google. The band had hit on a unique, loose-limbed formula and were determinedly carving their own niche. Machine Head is a pivotal album ...

The Machine Head album was a turning point for Deep Purple. Suddenly, belatedly, people began to realise that Messrs Gillan, Blackmore, Lord, Glover and Paice weren’t a Led Zeppelin or a Black Sabbath ...