Ear Training Foundations

Lesson 3 of 4

Hearing Chords

The third ear-training skill: recognizing chord quality by sound. Learn to hear major, minor, diminished, and augmented colors before you try to name every note inside a chord.


A chord is a stack of intervals heard all at once. The first chord skill isn't spelling out every note — it's hearing the chord's quality, its overall emotional color, the moment it sounds.

Quality before notes

When you hear a chord, your ear catches the mood before it catches the math. Major sounds bright and resolved; minor sounds darker and more introspective; diminished feels tense and unstable; augmented feels suspended and unsettled. Learn those colors first, and naming the notes inside becomes a separate, easier problem.

Start with the major–minor contrast

Almost all harmony lives on the line between major and minor, so that's the contrast to train first. Play a major chord, then a minor chord on the same root, and listen for the third — the note that flips the color. Once that flip is obvious, add one new quality at a time.

QualityHow it tends to feel
MajorBright, settled, resolved
MinorDarker, softer, introspective
DiminishedTense, unstable, wants to move
AugmentedSuspended, dreamlike, unsettled

How to practice

  1. Anchor on a root. Let a single chord ring so your ear settles into it.
  2. Compare on the same root. Switch major to minor without changing the bass note, so the only difference you hear is the color.
  3. Add one color at a time. Once major and minor are automatic, introduce diminished, then augmented, then suspended voicings.

In Coco, the Triad game drills exactly this: a chord plays, you choose the quality, and you get immediate feedback. Keep the answer set small at first, then widen it as the colors separate.

Where this leads

Chord qualities are the vocabulary of harmony. Once individual colors are familiar, chord progressions stop sounding like a blur and start reading like sentences. From here the natural next step is the other way notes group together over time — scales and modes.

Train this skill in the app

Download Coco and start a short ear-training session today.

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