On The Origin of Dissonant Chords
On the Origin of Dissonant Chords
The use of symbols to represent musical chords has a rich history that spans across different genres and musical traditions. One such symbol that has intrigued musicians and theorists alike is the equilateral triangle (∆) used to denote major seventh chords. This article aims to explore the origins of this symbol, particularly in the context of jazz music.
The Classical Origins
The origins of the triangle symbol for major seventh chords can be traced back to classical music and music theory. Triangle-shaped drawings, connecting augmented triads, were known even before the 1950s. These drawings often appeared within the circle of fifths, a fundamental concept in music theory. Classical composers and theorists utilized these triangle-shaped representations to depict the relationships between chords and tonalities.
The Introduction in Jazz
The first documented usage of the ∆ symbol in jazz is attributed to the renowned jazz musician Charles Mingus in 1957. In an analysis of a trumpet score handwritten by Mingus, dated to that year, the ∆ symbol appears alongside minor major seventh chords. These chords, which contain an augmented triad, found their representation through the equilateral triangle symbol. Mingus’s usage of the ∆ symbol suggests that it was employed to indicate the major minor seventh chord, which lacked an established symbol at that time.
The Symbol’s Significance
The ∆ symbol’s adoption in jazz as a representation for major seventh chords can be attributed to the need for a distinct symbol for the major minor seventh chord. It is important to note that the exact historical context and the person responsible for popularizing the ∆ symbol in jazz remain unclear. Further research and analysis of historical records and compositions from the 1950s may shed additional light on the symbol’s emergence and usage.
The ∆ Symbol and its Original Meaning
The book “The Chord Scale Theory & Jazz Harmony” by B. Nettles and R. Graf mentions that the ∆ symbol originally meant “triad” and may appear as a circle when hastily written. However, their claim lacks specific citations and further clarification. Therefore, while this text acknowledges the original meaning of the ∆ symbol, it does not provide conclusive evidence regarding its interpretation in the context of major seventh chords.
Conclusion
In conclusion, the equilateral triangle (∆) symbol used to represent major seventh chords has its roots in classical music and music theory. Its introduction into jazz can be attributed to Charles Mingus in 1957, who utilized it to denote minor major seventh chords. The exact origin and historical development of the ∆ symbol in jazz remain subjects for further investigation. By examining historical records and compositions, we may uncover more information about the symbol’s emergence and evolution within the jazz genre.
Sources
- Music: Practice & Theory Stack Exchange. “What is the origin of the triangle symbol for maj7 chords?” [Online]. Available: https://music.stackexchange.com/questions/57422/what-is-the-origin-of-the-triangle-symbol-for-maj7-chords. [Accessed: February 16, 2024].
FAQs
What is the significance of the equilateral triangle symbol (∆) in music notation?
The equilateral triangle symbol (∆) is commonly used in music notation to represent major seventh chords. It serves as a shorthand notation to indicate the specific chord quality and tonality.
Where does the triangle symbol for major seventh chords originate?
The triangle symbol for major seventh chords has its origins in classical music and music theory. It was used in various graphical representations, particularly within the circle of fifths, to depict the relationships between chords and tonalities.
Who introduced the ∆ symbol for major seventh chords in jazz music?
The first documented usage of the ∆ symbol in jazz is attributed to Charles Mingus in 1957. Mingus utilized the symbol to indicate minor major seventh chords, which contain an augmented triad.
Why was the ∆ symbol adopted in jazz to represent major seventh chords?
The ∆ symbol was likely adopted in jazz to represent the major minor seventh chord when no other symbol was associated with it. The need for a distinct symbol for this particular chord quality led to the adoption of the equilateral triangle symbol.
What was the original meaning of the ∆ symbol in music notation?
According to the book “The Chord Scale Theory & Jazz Harmony” by B. Nettles and R. Graf, the ∆ symbol originally meant “triad” and may appear as a circle when written hastily. However, further research is needed to validate this claim and provide more concrete evidence.
How did the ∆ symbol evolve and gain popularity in jazz music?
The exact origin and historical development of the ∆ symbol in jazz remain unclear. While Charles Mingus is credited with its early usage, further research and analysis of historical records and compositions from the 1950s may provide more insights into its evolution and popularity.
Is the ∆ symbol used exclusively in jazz music?
No, the ∆ symbol is not exclusive to jazz music. It is also used in other genres and contexts to represent major seventh chords. However, its usage and association with jazz music have gained particular prominence.
What further research is needed to uncover more information about the ∆ symbol?
Further research is needed to explore historical records, compositions, and interviews from the 1950s and beyond to uncover additional information about the origin, development, and usage of the ∆ symbol in jazz and other musical genres.