I would think most of you will have some thoughts on this matter, or at least give credence to the notion that heavy metal ran out of gas at some point. I stumbled across this entire Black Sabbath concert from 1970. I find it especially interesting in how simple and direct the band’s performance is. They’re just, like, dudes…with good equipment.
As interesting as this concert is, I propose that the gauge on heavy metal first neared “E” sometime during this gig.