How to name quarter tone chords

How to Name Quarter Tone Chords

Nomenclature

Quarter tone chords, which explore the spaces between traditional chromatic intervals, are named based on the intervals they contain. The naming conventions for quarter tone intervals can vary, but there are some commonly used terms.

Neutral Third

A quarter tone interval of 3.5 is commonly referred to as a “neutral third.” This interval represents the just interval 11/9. The term “neutral” highlights the ambiguous nature of this interval, as it falls between the traditional major and minor thirds.

Narrow Fifth or Minor Fifth

A quarter tone interval of 6.5 can be called a “narrow fifth” or a “minor fifth.” This interval corresponds to the 11th subharmonic 16/11. It is sometimes referred to as a “wolf” fifth due to its dissonant and unstable quality.

Ultra Sixth or Infra Seventh

A quarter tone interval of 9.5 can be named an “ultra sixth” or an “infra seventh.” These terms are enharmonic and represent the interval 26/15 closely. This interval can also be referred to as a “subminor seventh” or “supermajor,” highlighting its unique and complex nature.

Conclusion

Naming quarter tone chords is based on the intervals they encompass. Terms such as “neutral third,” “narrow fifth,” and “ultra sixth” are commonly used to describe these chords. Understanding the nomenclature of quarter tone chords allows musicians to communicate and explore the vast possibilities of microtonal harmony.

Sources:

  • Music Stack Exchange. “How to Name Quarter Tone Chords.” Available at: link
  • Music Theory Videos. “Quarter Tones.” Available at: link
  • FMQ. “Notes & Letters column: A wonderworld of quarter-tones.” Available at: link

FAQs

How to Name Quarter Tone Chords

What are quarter tone chords?

Quarter tone chords are chords that utilize intervals smaller than the traditional half-step or semitone. They incorporate intervals that are one-quarter of a whole tone in size, allowing for a wider range of tonal possibilities.

How are quarter tone chords named?

Quarter tone chords are named based on the intervals they contain. Commonly used terms include “neutral third,” “narrow fifth,” and “ultra sixth,” which describe the specific quarter tone intervals present in the chord.

What is a neutral third?

A neutral third is a quarter tone interval of 3.5. It represents an interval that falls between the traditional major and minor thirds and is often associated with a unique and ambiguous tonal quality.

What is a narrow fifth?

A narrow fifth, also known as a minor fifth, is a quarter tone interval of 6.5. It corresponds to the 11th subharmonic 16/11 and is characterized by its dissonant and unstable nature.

What is an ultra sixth or infra seventh?



An ultra sixth or infra seventh is a quarter tone interval of 9.5. These terms are enharmonic and represent the interval 26/15 closely. They can also be referred to as a subminor seventh or supermajor, highlighting their complex and unique tonal characteristics.

Are there other commonly used terms for quarter tone chords?

Yes, in addition to the terms mentioned above, there are other commonly used terms for quarter tone chords. These may vary depending on the context and the preferences of different composers and theorists.

Can quarter tone chords be notated in traditional music notation?

While traditional music notation is limited to representing the standard twelve-tone equal temperament system, there are alternative notations and symbols that can be used to indicate quarter tone intervals and chords. These notations often involve the use of microtonal symbols or altered accidentals.

How can I incorporate quarter tone chords in my compositions?

To incorporate quarter tone chords in your compositions, you can experiment with using microtonal instruments or electronic synthesizers capable of producing quarter tones. Additionally, exploring the works of composers who have utilized quarter tones can provide inspiration and guidance for incorporating these chords effectively.