Chords by ear: from “happy and sad” to diminished, augmented and inversions

Recognising chords by ear starts in grade 2 with the major–minor pair and ends in grade 7 with five kinds of seventh chords. Most children get stuck at “happy–sad” because nobody showed them what exactly to listen for. Here is a method that works at home without an instrument.

Happy and sad – and then what

The mood association is a good start: a major triad sounds bright, a minor one darker. In grade 2 that is enough. The trouble starts when the diminished triad arrives (also “sad”, only restless) and the augmented one (“strange”). Mood no longer separates them; the child has to start hearing the structure.

Listen to the lower third

A triad is two thirds stacked on each other. Whether the chord is major or minor is decided by the lower third: major in a major triad, minor in a minor one. So first practise telling a major third from a minor third (in Solfeggio: Intervals → “unison to fifth”), only then chords. When the child hears a broken chord, let them hum the first two notes and say whether it is a major or a minor third. That is the whole secret.

Diminished and augmented

A diminished triad is two minor thirds: it sounds tight and “wants to resolve”. An augmented triad is two major thirds: wide, as if falling apart, with no perfect fifth in it. Children quickly label it “the ghost-film chord”. Practise in pairs: major versus augmented (they differ only in the top note), minor versus diminished. After a week, put all four together.

Inversions: listen to the bass

From grade 4 inversions appear. The same major triad has three positions: root position (root in the bass), first inversion (third in the bass) and second inversion (fifth in the bass). The chord type is still heard by its colour; the inversion is recognised by the lowest note. Trick: the child hums the bass, then hums the root (the note that “sounds like home”) and checks whether they are the same. If yes: root position. If the bass is a third higher: first inversion. A fifth higher: second inversion.

A three-week plan

1. Week 1: major and minor thirds (intervals), then broken major–minor. Ten examples a day.
2. Week 2: four kinds of triads, broken first, “together only” by the end of the week.
3. Week 3: major and minor inversions (grade 4+), always starting by humming the bass.