Black Sabbath performs during their Heaven and Hell tour in 1980. The band helped revive the long-feared “Devil’s interval”—a dissonant sound once shunned by medieval choirs—as the backbone of heavy ...
In music theory, the tritone is an interval of three whole steps that can sound unresolved and creepy. Over time, the sound has wound up in jazz,... The Unsettling Sound Of Tritones, The Devil's ...
It started when Ozzy Osbourne gave Geezer Butler a cryptic book of black magic. Butler had been dabbling in the occult, and moving away from the Catholicism that was so dear to him. But that night ...