DID YOU KNOW…
The "Devil in Music": Why a Jarring Interval Was Once Forbidden
For centuries, a specific musical interval known as the tritone was famously dubbed the "diabolus in musica," or "the devil in music," and was largely avoided or even forbidden in Western classical compositions due to its unsettling dissonance.
This dissonant interval, spanning three whole steps (like C to F#), creates a highly unstable and unresolved tension that medieval theorists and religious authorities found disturbing and potentially blasphemous. Its jarring quality clashed with the prevailing quest for harmonic consonance and "divine" perfection in sacred music, leading to its unofficial prohibition in some periods. While initially used to evoke fear or chaos in early opera, composers like Wagner, Liszt, and later jazz musicians daringly embraced and recontextualized the tritone, transforming it from a forbidden discord into a powerful expressive tool that defines tension and resolution in modern music.
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