Consonance and dissonance

Ask what kind of judgment you are making

When you call a chord tense, do you mean that you hear a beating or rough quality, expect it to move elsewhere, or dislike its sound? These are different judgments. A loud distorted sound might be enjoyable, and a smooth chord might feel unsettled because of where it occurs. Make separate notes for the sensory impression, the expected continuation and your personal preference.

Create a listening sheet with three columns: texture of the sound, sense of arrival, and liking. Use your own descriptive words before assigning a number. Repeat the same excerpt later without looking at the first response. This informal comparison can sharpen your observations, but it is not a scientific experiment establishing what all listeners hear. Your familiarity with the instrument and style is part of the situation.

References: [1]

A classification belongs to a practice

In introductory first-species counterpoint, consonant harmonic intervals include thirds, fifths, sixths and octaves, while seconds, sevenths and fourths above the lower voice are restricted. This is a deliberately limited teaching environment derived from a particular contrapuntal tradition. It trains control over how lines combine. The restriction does not mean that music outside the exercise must avoid those intervals.

Consider the fourth F above bass C. A counterpoint exercise may require it to behave as a dissonance; a different texture can sustain a fourth-based sonority as a stable colour. When analysing, state the rule system before announcing a violation. 'This fourth needs treatment in this exercise' is a more precise statement than 'fourths sound wrong'. The same interval name can participate in different musical roles.

References: [2]

Listening history matters

A 2016 cross-cultural study by McDermott and colleagues found that preference for consonant over dissonant tone combinations was not shared equally by the listener groups examined. Tsimane’ participants with limited exposure to Western music did not show the same preference as the US groups. The result challenges an automatic equation between a Western consonance ranking and a universal human aesthetic.

This finding does not make every musical distinction arbitrary or prove that acoustics have no role. It gives a reason to avoid presenting your own response as the response of all people. When documenting a traditional practice, ask its musicians what distinctions matter, learn the relevant vocabulary and listen to examples in context. A keyboard demonstration should be labelled as a demonstration with that instrument and tuning.

References: [3]

Test context instead of avoiding tension

Play C4 and D4 together, then place that pair inside a longer sequence. First approach it from C4–E4 and return to C4–E4. Next repeat C4–D4 several times as a sustained background. The notes in the pair have not changed, but their role in the phrase may. Ask whether the sound seems to demand continuation in one setting more than the other.

Keep volume, register and instrument constant when comparing intervals, then deliberately change one of those variables. Move a close pair upward, spread it across an octave, or replace a bright sound with a softer one. Record what changes and what does not. This gives an arranger practical evidence for a particular piece. It is more useful than selecting intervals from a fixed list of allegedly pleasant and unpleasant sounds.

What to remember

• Specify whether you mean sensory quality, stylistic function or preference.
• Counterpoint rules describe a practice rather than universal taste.
• Use careful listening comparisons and respect culturally learned distinctions.