Everyone knows the sounds of Halloween: creaky floorboards, howling winds, the amplified sound of a beating heart. But back in the day, the devil was said to exist in a particular musical tone. For ...

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 ...

The Devil is said to have the best tunes, but what do they sound like? A new film about the history of heavy metal highlights the so-called Devil's Interval, a musical phenomenon suppressed by the ...