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Ivor Darreg

Ivor Darreg is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Ivor Darreg rather than just read about it. In short: Ivor Darreg (May 5, 1917 – February 12, 1994) was an American composer and leading proponent of microtonal or "xenharmonic" music. He also created a series of experimental musical instruments.

Key takeaways

  • Ivor Darreg belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Ivor Darreg to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Ivor Darreg from memory before moving on to harder problems.

Reference excerpt

Ivor Darreg (May 5, 1917 – February 12, 1994) was an American composer and leading proponent of microtonal or "xenharmonic" music. He also created a series of experimental musical instruments.

Biography Darreg, a contemporary of Harry Partch and a close colleague of John H. Chalmers, Erv Wilson, and Joel Mandelbaum, was one of America's leading theorists and practitioners of experimental intonation and experimental instrument building. Frequently he published his writings in his own Xenharmonic Bulletin. Darreg was born Kenneth Vincent Gerard O'Hara in Portland, Oregon. His father John O'Hara was editor of the (Portland) Catholic Sentinel newspaper and his mother was an artist. (His Uncle, Edwin Vincent O'Hara, was a Roman Catholic Bishop.) He dropped out of school as a teenager, but he had both self-taught facility in at least ten languages and a basic understanding of all the sciences. His real love was music and electronics. Because of his choice of music, his father cast him out, and he and his mother set out on their own with little help from anyone. At that point he took on the name "Ivor," which means "man with bow" (from his cello-playing talents) and "Drareg" (the retrograde of "Gerard"), which he soon changed to "Darreg". In the forties, Ivor built an Amplified Cello, Amplified Clavichord, and Electric Organ, the Electric Keyboard Oboe and the Electric Keyboard Drum. The Amplified Clavichord and Electric Organ no longer exist, but the Electric Keyboard Oboe - like the organ, based on blocking oscillator circuits and capable of microtonality -, the Electric Keyboard Drum, which uses buzzer-like relays, and the Amplified Cello are still working. In the 1970s Darreg built a series of instruments he called Megalyras. Part of his concept was that the several strings were to be tuned like the several pipes that comprise a single "note" in an organ stop—multiple pipes at sounding together at selected, closely related pitches to create the sense not of several tones but of one grand composite tone. Darreg lived for much of his adult life in or near Los Angeles, California, then spent his final nine years in San Diego. He devoted his entire life to his music and microtonality. Ivor sported a long beard to cover the fact that due to both an illness and confrontation from a violent break-in to his home in the 1950s, he had lost his teeth. He consequently taught himself to pronounce words and sing without them. He would often accompany his music with singing. He would sing the high notes in the morning when his vocal cords were tighter and the low notes in the evenings when they were more relaxed. His songs were often in Esperanto, a language in which he was fluent. He coined the term "xenharmonic", designed and built many original microtonal musical instruments, and wrote voluminous amounts of material about various musical tunings. Perhaps his most important contribution to music theory was his idea that different tunings exhibit different "moods". Darreg's informal network of microtonal musicians writing letters to each other later morphed into the more formal Xenharmonic Alliance.

References

External links Ivor Darreg Archived 2016-03-03 at the Wayback Machine at afn.org Ivor Darreg and Xenharmonics article at Perfect Sound Forever online magazine Ivor Darreg at frogpeak.org Darreg Ivor Darreg at Xenharmonic Wiki Listen to Ivor Darreg play his music at BandCamp.com Listen to Ivor Darreg's album" "Detwelvulate!

Worked examples

Example 1 — a first encounter with Ivor Darreg

Start with the simplest possible case. Write down what Ivor Darreg claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Ivor Darreg before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Ivor Darreg ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Ivor Darreg

In research
Ivor Darreg appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Ivor Darreg in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Ivor Darreg is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1917 births, 1994 deaths, 20th-century American classical composers, so understanding it makes those chapters shorter.
In everyday life
Look for Ivor Darreg outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Ivor Darreg in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Ivor Darreg means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Ivor Darreg out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ivor Darreg in simple terms?

Ivor Darreg (May 5, 1917 – February 12, 1994) was an American composer and leading proponent of microtonal or "xenharmonic" music. He also created a series of experimental musical instruments.

Why does Ivor Darreg matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Ivor Darreg?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Ivor Darreg.

Tags

  • 1917 births
  • 1994 deaths
  • 20th-century American classical composers
  • 20th-century American male composers
  • American male classical composers
  • Inventors of musical tunings
  • Microtonal composers

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