Whatever happened to heavy metal? On tonight's Grammy Awards, the five nominees in the Best Metal Performance category might wonder if they even want to be invited to the party; the music has rarely gotten along well with the pop music establishment. And it has been years since an industry spotlight has shined on a heavy metal band.
The state of heavy metal may be in question, but partisans can agree on one thing: The form's roots are located in the chugging guitar and wailing vocals of two bands: Led Zeppelin and Black Sabbath.
Taken from All Things Considered, February 11, 2007