Music Forbidden by Historical Superstition
The tritone, a dissonant musical interval, was once nicknamed the Devil in Music. Medieval theorists avoided this unsettling sound, fearing it could summon dark forces or offend the divine.
This musical interval spans three whole tones and creates a jarring, unresolved tension that feels inherently unstable. Historically, churches discouraged its use in compositions because the sound was perceived as chaotic and unholy. Today, we recognize it as a staple of suspenseful film scores and heavy metal music. It serves as a perfect example of how cultural fears can shape the evolution of art and sound.
Source: The Devil's Chord