How to hear a modulation to the dominant, subdominant or relative minor

In the modulation questions of higher-grade aural tests, the examiner plays a passage that starts in one key and ends in another, and you say where it has gone. You don't need perfect pitch: you only need to compare where the music ends with where it began. This guide explains what changes in each kind of modulation, how the final cadence gives the answer away and how to practise.

What modulation means

A tonal piece quickly makes you feel where “home” is. A modulation moves that sense of home to a new key, and the move is confirmed by a cadence in the new key. The aural tests ask about the closest destinations: keys that share all, or all but one, of the notes of the home key.

Take C major as an example. Its dominant is G major, which adds one sharp, F♯. Its subdominant is F major, which adds one flat, B♭. Its relative minor is A minor, which has the same key signature but uses G♯ as its leading note. From a minor key the destinations are the dominant, the subdominant and the relative major, so from A minor they are E minor (or major), D minor and C major.

Modulation to the dominant

Going to the dominant feels like a lift: the music brightens and gains energy, as if it has climbed a step. The clue in the melody is a newly sharpened note, F♯ in C major, which acts as the leading note of the new key. In sol-fa terms, fah has been raised to fi.

At the end, the bass comes to rest on the old soh, and the final chord is major. If you sing the original key note against that last chord, it no longer sounds like home; it sounds like the fourth note of a new scale.

Modulation to the subdominant

The subdominant has the opposite feel. Rather than lifting, the music relaxes and settles, sometimes seeming to sink a little. The clue is a newly flattened note, B♭ in C major, so the old ti drops to ta and the strong upward pull of the leading note to doh disappears.

The passage ends on a major chord built on the old fah. Sing the original key note against it and it sounds like the fifth note of the new scale: stable, but no longer home.

Modulation to the relative minor or major

The relative minor shares its key signature with the major key, so the clue is not a new key signature but a change of mood. The music darkens, and the sharpened leading note of the new key appears: in C major, G becomes G♯, so soh is raised to si. The final chord is minor, built on the old lah, a minor third below the original key note.

Going the other way, from a minor key to its relative major, the music brightens without any new sharps or flats; in fact the raised leading note of the minor key tends to disappear. The final chord is major, built a minor third above the original key note.

The cadence at the end gives the answer

Every modulating passage ends with a cadence in the new key, usually a perfect cadence. That final chord is your answer, so the task comes down to one comparison: how does the last chord relate to the key chord you heard at the start?

In ABRSM exams the examiner names and plays the starting key chord before each passage. Hold its root in your head while the music plays, and when the passage ends, work out where the new home note sits in the old key.

From a major key to a major chord on soh: dominant.
From a major key to a major chord on fah: subdominant.
From a major key to a minor chord on lah: relative minor.
From a minor key to a major chord a minor third higher: relative major.
From a minor key to a chord a fifth or a fourth higher: dominant or subdominant.

One fact that settles many answers

When a passage starts in a major key, the dominant and the subdominant are both major keys, so the only destination that ends on a minor chord is the relative minor. If the last chord of a major-key passage sounds minor, you have your answer. If it sounds major, you only need to choose between the bright lift of the dominant and the gentler settling of the subdominant.

Tips that work

Keep the opening key chord alive. Hold its root in your head during the passage; when it starts to clash with the music, the key has moved.
Listen for the new accidental. A raised note (fi) points to the dominant, a lowered note (ta) to the subdominant and a raised soh (si) to the relative minor.
Check the mood. Brighter and lifted suggests the dominant, relaxed and lower the subdominant, darker the relative minor.
Count up to the new key note. Sing up the old scale from doh to the final bass note: five notes means the dominant, four the subdominant and six the relative minor.
Know the letter names. You may name the new key instead of giving its technical name, so learn the three neighbours of common keys: from D major they are A major, G major and B minor.

Which grades ask about modulation

Modulation questions appear only at the higher grades, and only at two of the four boards. Here is where they come up.

ABRSM Grade 7: one passage, starting in a major key and played once. It modulates to the dominant, subdominant or relative minor, and you answer with the technical name or the letter name of the new key.
ABRSM Grade 8: two passages, each played once, one starting in a major key and one in a minor key. The destinations are the dominant, subdominant and relative major or minor, and for a minor-key passage that goes to the dominant, saying “dominant” is enough whether the new key is major or minor.
Trinity Grade 6: a question about the first four bars of the piece, which is in a major key and is played once for this question. The music modulates to the subdominant, dominant or relative minor, and key names are accepted.
Trinity Grade 7: the same question, but the piece can be in a major or a minor key, so the answer may also be the relative major.
Earlier grades and other boards: ABRSM Grade 6 has no modulation test, but its cadence question trains the same habit of hearing how a phrase ends, and our cadence guide covers it. Trinity Grade 8 has no modulation question, and the RCM and AMEB aural tests don't include one.

How to practise

Start with short comparisons before full passages. Play or listen to a key chord, then a cadence in the dominant, the subdominant or the relative minor, and name the destination. Once that feels easy, move on to whole passages that turn through a pivot chord before the new cadence, and answer after a single hearing, as in the exam.

Our trainer creates modulating passages in four-part harmony: each one moves through a chord shared by both keys and is confirmed by a cadence in the new key, played on a sampled grand piano. After each answer you see both keys and a tip for hearing the move. The ABRSM aural page and the Trinity aural page show where modulation fits among the other tests of each grade.

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Questions people ask

How can I tell a modulation to the dominant from one to the relative minor?

Listen to the final chord. From a major key, the dominant ends on a major chord and the relative minor on a minor one, so the mood is your quickest clue: brighter for the dominant, darker for the relative minor. If you are still unsure, sing up the old scale to the final bass note: five notes means the dominant, six the relative minor.

Can I give the letter name of the new key?

Yes. ABRSM accepts either the technical name, such as “dominant”, or the letter name of the new key, such as “G major”, and Trinity also accepts key names. Technical names are often the safer choice, because you only need to hear how the two keys relate, not work out letter names under pressure.

How many times is the modulation passage played?

In ABRSM Grades 7 and 8 each modulating passage is played once, after the examiner names and plays the starting key chord. In Trinity Grades 6 and 7 the question is about the first four bars of the piece, which are played once for it. Either way, practise answering after a single hearing.

Do I need perfect pitch to hear modulations?

No. Modulation questions are about the relationship between two keys, not about absolute pitches. You compare the ending with the key you heard at the start, so relative pitch, the ability to hear how notes and chords relate to a key note, is all you need. It improves steadily with regular practice, even if it feels hard at first.

What changes at ABRSM Grade 8?

Grade 8 gives you two passages instead of one. The first starts in a major key, as at Grade 7; the second starts in a minor key and can go to the dominant, the subdominant or the relative major. If a minor-key passage goes to the dominant, you only need to say “dominant”, whether the new key is major or minor.

Is modulation tested before Grade 7?

Not at ABRSM, where modulation questions start at Grade 7. Trinity asks about modulation at Grades 6 and 7, though not at Grade 8. Earlier grades lay the foundations: the cadence questions at ABRSM Grade 6 and Trinity Grades 4 and 5 train you to hear how a phrase ends, which is exactly what a modulation question needs.