RUŌOD Lab

Level 4 · Accord Construction

Accords: Study Guide and First Listening Exercise

Read our accord reference, then learn to hear an accord for yourself: a listening exercise and knowledge check that open the formulation stage of the course.

Intermediate 20 min study By the RUŌOD Lab team Updated

In short

An accord is a combination of materials that reads as one new smell rather than as its separate parts. The reference guide explains the idea and how accords are recorded. This study guide starts Level 4 by training you to hear the moment when it happens, which is the skill every workshop in this level depends on.

What you will learn

  • Explain the difference between a blend and an accord
  • Identify when two materials have started to read as one

Before this lesson: Build a Training Material Library

What to look for as you read

  • How the guide tells a harmonious blend from a true accord.
  • Why an accord is recorded as its own small formula.
  • Which of your Level 3 materials could plausibly pair.

Keep a fair expectation: fusion is a matter of perception, so you and another person may disagree about whether a pair has become one. Your notes record what you noticed.

Practical exercise: Listen for the moment two become one

About 25 minutes · You will have: notes on one pair of materials at three ratios, marking where you stopped hearing two things

Use two materials from your training library at the same dilution, ideally 10%. Benzyl acetate and linalool work, and so will other pairs. Mix on the strip or in small vials by weighing the dilutions: 1:1, 3:1 and 1:3.

  1. Smell each single material first, and write a word for each.
  2. Smell each mixture, with rests. For each ratio, answer: do I hear two things, or one?
  3. Note which material leads at each ratio.
  4. Return after an hour and repeat.

You have done this well if your notes separate what you can hear at each ratio, and you can name one ratio that comes closest to reading as a single smell, or say honestly that none does.

Knowledge check

1. What makes a blend an accord?
Show the answer

It reads as one new impression rather than its separate parts. An accord is defined by how it is perceived. Two materials can make one, and twenty may fail to.

2. Why learn accords before whole formulas?
Show the answer

An accord is a building block you can understand, record and reuse. A small system lets you hear what each change did. Whole formulas have too many moving parts to learn from at first.

3. You can still clearly pick out both materials. What does that suggest?
Show the answer

They have not fused at this ratio, so try another ratio or a third material. Fusion often depends on ratio. It is not guaranteed, and some pairs will never fuse.

Further reading and materials

Written and reviewed by the RUŌOD Lab team. This is general education, not legal, regulatory, medical or safety advice. Example dilutions and exercises are for learning, are not validated products, and have not been safety-assessed. Completing a lesson confers no qualification. How we check these lessons.