Ear Training Lab
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Ear training: listening with intention
Written by Jordan Elias, MT-BC
Ear training is the practice of building a conscious connection between sound and understanding — hearing something and knowing what you are hearing, not just feeling it. This tool lets you work on two fundamental skills: interval recognition and chord identification.
Intervals
An interval is the distance in pitch between two notes, measured in semitones. The smallest interval in Western music is the minor second — one semitone, like E to F. The largest in this exercise is the octave, twelve semitones, the same note at double the frequency. In between are all the intervals that give music its characteristic tension, colour, and movement: the perfect fifth, stable and open; the tritone, unstable and dissonant; the major third, bright and settled.
When you hear an interval, you are hearing a frequency ratio. The octave is 2:1 — the upper note vibrates exactly twice as fast as the lower one. The perfect fifth is approximately 3:2. These ratios are not abstractions. They are relationships that the auditory system has been learning since infancy, encoded through exposure to music, language, and the overtone structure of natural sounds. Ear training makes that tacit knowledge explicit.
1. start with diatonic intervals
Select Diatonic mode and Together presentation. Work through the eight intervals in the major scale before moving to the full chromatic set. The diatonic intervals have well-known melodic anchors: the perfect fifth opens a lot of folk music; the major third begins a major triad; the tritone has a distinctive tension that is hard to mistake once you've noticed it consciously.
2. melodic vs harmonic
Try the same interval settings with Together, then Ascending, then Descending presentation. Hearing two notes simultaneously (harmonic hearing) is a different cognitive task from hearing them in sequence (melodic hearing). Most ear training focuses on one or the other. Both are useful and each reinforces the other over time.
3. notice the errors
The tool weights questions toward the intervals you get wrong most often. If you notice certain intervals coming up repeatedly, that's intentional — those are the ones your ear hasn't yet learned to discriminate reliably. Pay attention to which pairs you consistently confuse. Minor second and major second. Minor sixth and major sixth. The confusion points are where the actual learning is happening.
Chords
A chord is three or more notes sounded together. The most fundamental are triads — three notes built from a root, a third, and a fifth. Major triads are bright and stable. Minor triads are darker. Augmented and diminished triads are less common but important: the augmented has an upward-straining quality, the diminished an instability that wants to resolve.
Seventh chords add a fourth note a seventh above the root, creating richer, more complex sounds. The dominant seventh — major triad plus minor seventh — is the most important chord in tonal music. Its tension resolves strongly to the tonic, and that resolution is the engine that drives most harmonic movement in Western music from the Baroque period to contemporary pop.
Extended chords add further layers above the seventh: ninths, elevenths, thirteenths. These are the harmonic language of jazz, and identifying them requires building up a felt sense of their characteristic qualities as well as their internal structure.
4. root position triads first
Start with Maj & Min, Root only, Together. The difference between major and minor is the single most important perceptual distinction in tonal harmony. Once that's reliable, move to All triads and encounter augmented and diminished. Then add inversions — which change the bass note without changing the chord, and change the sound considerably.
5. arpeggio voicing as diagnostic
Switch to Arp ↑ voicing. When notes play one at a time, the individual intervals become more audible. This is useful when you're learning a new chord type and need to hear its internal structure. A minor seventh chord ascending is root — minor third — perfect fifth — minor seventh. Hearing those intervals in sequence can help anchor the overall sound. Then switch back to Together and see if the sound makes more sense.
6. extended chords and the quality stack
When working with 9/11/13 chords, notice that the answer interface asks you to build the chord from its components — quality, seventh type, and extensions. This reflects how extended chords actually work: they stack on top of a fundamental quality. A major 9 chord is a major triad, with a major seventh, with a ninth added. Hearing each layer separately and then as a whole is the core skill.
Inversions
An inversion changes which note is at the bottom of a chord without changing its identity. A C major chord in root position has C in the bass. In first inversion it has E in the bass; in second inversion it has G. The same three notes — but the sound changes significantly, particularly in its harmonic weight and the way it relates to the bass line.
Training with inversions develops the ability to identify a chord regardless of its voicing, which is essential for real-world listening. In most music, chords don't sit politely in root position. Basslines move, voices invert, and the same harmony wears different shapes. The inversion option in this tool presents all three positions randomly so you can't rely on the lowest note being the root.