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 ...

EVERY one who cares for art, who likes to read discussions of art, must often have felt how fascinating, and yet how generally misleading, are the analogies which writers love to make between art and ...

The world was supposed to end on December 21, 1954. At least that’s what a small religious group called The Seekers firmly believed. But for psychologist Leon Festinger, the far more important date ...

The tritone has been blamed for chaos, banned by choirs, and embraced by metalheads. Here’s what the 'devil's interval' really does to your brain. Black Sabbath performs during their Heaven and Hell ...