Dive into the depths of music theory and unlock the mystery of the infamous, elusive enigma in music: What is the forbidden chord? Gain a holistic understanding from the historical origins to its application in contemporary music.
Unlocking the Mystery
Music, in its infinite diversity, brings to life numerous complexities that pique curiosity, and one of the most intriguing questions that has fascinated musicians and enthusiasts alike is, “What is the forbidden chord?“. In this in-depth article, we’ll pull back the curtain on this enigmatic musical concept and delve into the labyrinth of its history, application, and cultural significance.
The Forbidden Chord: A Historical Overview
Setting the Stage: Early Music Theory
Before we can truly grasp what the forbidden chord is, we must first understand the roots of music theory itself. In the realms of early Western music, we observe a strict adherence to rules and structures. This rigidity, although restrictive, paved the way for a flourishing tradition that would shape music for centuries to come.

Birth of the Prohibition: Tritone in Medieval Times
In the heart of the Middle Ages, the Church had significant sway over societal norms, including musical compositions. The infamous forbidden chord, also known as the “tritone” or the “Devil’s interval”, emerged during this era, largely due to its dissonant sound that clashed with the church’s preference for harmonious melodies.
The Science Behind the Forbidden Chord
The Mathematics of Dissonance
Music, as ethereal as it may seem, is deeply rooted in mathematical principles. The discordant sound of the tritone is no coincidence but rather a product of specific frequency ratios.
Anatomy of the Tritone
The forbidden chord or tritone, as it’s known, is an interval composed of three adjacent whole tones. Understanding its structure is key to comprehending why it holds a reputation for discordance.
The Forbidden Chord in Practice
The Forbidden Chord in Classical Music
Despite its historical prohibition, the forbidden chord found its way into classical music. Composers like Wagner and Liszt cleverly used it to add tension and drama to their works.
The Forbidden Chord in Contemporary Music
Fast forward to modern times, the once forbidden chord has become a staple in various genres such as jazz, blues, and rock. Its inherent dissonance, once shunned, is now celebrated for its unique sound.
Breaking Down the Taboo: The Shift in Perception
The Transition from Forbidden to Favored
The transformation of the forbidden chord from a taboo to a favored tool in music is indeed intriguing. This section explores the factors contributing to this seismic shift in perception.

The Impact of Cultural Changes on Music
Culture and music are inseparable. As societal norms evolved, so did the acceptance of previously forbidden elements in music, including the tritone.
Famous Uses of the Forbidden Chord
Iconic Classical Compositions
Despite its contentious nature, several classical pieces have skillfully incorporated the tritone. This section showcases examples of the most notable ones.
Tritone in Modern Music Masterpieces
Contemporary music owes much to the forbidden chord. From legendary rock songs to emotive blues tunes, let’s explore some of the best tritone-infused pieces.
6. Frequently Asked Questions
What is the forbidden chord?
The forbidden chord, also known as the tritone or the Devil’s interval, is a musical interval that spans three whole tones. Historically, it was avoided due to its dissonant sound.
Why is it called the forbidden chord?
The term “forbidden chord” came from the Middle Ages when the Church influenced societal norms, including music. The dissonant sound of the tritone was seen as inappropriate, hence it became “forbidden”.
Is the forbidden chord still forbidden today?
No, the forbidden chord is not forbidden today. In fact, it’s commonly used in many genres of music like jazz, blues, and rock for its unique and tension-filled sound.
What are some famous pieces that use the forbidden chord?
Numerous pieces across various genres employ the tritone. Examples include Wagner’s “Tristan and Isolde” in classical music and Jimi Hendrix’s “Purple Haze” in rock music.
How can I identify the forbidden chord?
The forbidden chord, or tritone, can be identified as a particularly dissonant interval in a piece of music. It is typically characterized by a tension-filled, unstable sound.
Can the forbidden chord be used in a harmonious way?
Yes, when used strategically and resolved properly, the forbidden chord can contribute to harmony and create dramatic tension in music.

Conclusion: Embracing the Forbidden
The forbidden chord, while initially shunned, has proven itself to be an indispensable tool in shaping music. Through its journey from being forbidden to favored, the tritone symbolizes music’s inherent ability to adapt, evolve, and transcend societal norms. So, the next time you hear a discordant note that catches your attention, remember: sometimes, it’s the “forbidden” elements that make a masterpiece unforgettable.