Blue Cheer may have released the first Heavy Metal album when they put out their debut Vincebus Eruptum in 1969. It had all the trademarks that would come to define the genre — angry vocals, heavily distorted guitars, a thundering rhythm section) and it was released more than two years before the first Black Sabbath record. What the San Francisco power trio also brought was the danger. They were named after a particulate toxic strain of LSD, fights and mayhem were common at their shows and they were managed by an ex-Hell's Angel. Blue Cheer were a rock and roll band but they weren't too far removed form being a gang. We prefer to call them Outlaw Rock. 

 

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