“I think metal is here to stay, in some form or other,” Butler said. “The metal festivals in Europe are massive events, attracting 100,000 plus audiences, and I think that is the future for metal, huge gatherings with several bands.”
He added, “It’s great to see people our age rocking out to our music, though we seem to attract people of all ages. I want to leave people with good memories of our shows.”
It is generally accepted, with a few arguments, that the entire Metal genre stemmed from Iommi’s use of the “tritone,” otherwise known as “the devil’s note.” This, in combination with Butler’s dissentive lyrics against the working class and “the Madman” Ozzy Osbourne’s aggressive vocals, paved the way to influence generations of bands, a worldwide community, and an independent industry.