Heavy Metal turns 40! Not the magazine. The music.

On February 13, 1970, the Birmingham quartet known as Black Sabbath released their self titled debut LP to the world. Fourty years ago today Ozzy Osbourne, Tony Iommi, Geezer Butler & Bill Ward began a music revolution that would breath new life into the world’s bastard social scene of the time. It came to be known as heavy metal.

Interesting look back.