A cadence in music is a short sequence of chords, usually two, that creates a sense of pause, resolution, or arrival at the end of a phrase. Think of cadences as the punctuation of harmony: some sound like a full stop, others like a comma. If you know which chords land where, you control exactly how settled or unsettled your music feels.
Every cadence is built from diatonic chords in a key. The examples below are in C major, where the diatonic chords are C, Dm, Em, F, G, and Am (plus the diminished B). Once you hear the move in C, you can use the same pattern in any key.
The four main types of cadence in music
Perfect (authentic) cadence: V to I
The perfect cadence moves from the dominant chord (V) to the tonic (I). In C major that is G to C. It is the strongest “we have arrived home” sound in tonal music, and it is how most pop, classical, and folk phrases finish. The pull is even stronger if you use a dominant seventh (G7 to C); the seventh of the chord wants to resolve down by a step.
Plagal cadence: IV to I
The plagal cadence goes from the subdominant (IV) to the tonic (I): F to C in C major. It is often called the “Amen” cadence because it is the sound sung at the end of hymns. It resolves, but more gently and warmly than a perfect cadence.
Imperfect (half) cadence: ending on V
A half cadence ends on the dominant (for example C, Am, then G), leaving the phrase hanging. Nothing resolves, so it feels like a comma. This is perfect at the end of a verse line when you want the listener to lean forward into what comes next.
Interrupted (deceptive) cadence: V to vi
The deceptive cadence sets up the dominant as if it will resolve to I, then swerves to the relative minor (vi) instead: G to Am in C major. The ear expects home and gets a surprise. It is a great way to extend a phrase or add an emotional twist before you finally resolve.
How the strength of a cadence changes
Not every perfect cadence sounds equally final, and that nuance is one of the most useful things to understand. Two factors decide how conclusive a V to I move feels: the bass and the top melody note.
A cadence is at its strongest when both chords are in root position (the root of the chord is the lowest note) and the melody lands on the tonic. In C major that means G sitting on a G bass moving to C sitting on a C bass, with the top voice arriving on C. This is what theory books call a perfect authentic cadence, and it shuts the phrase firmly. The moment you put one of those chords in an inversion, or let the melody settle on the third or fifth instead of the tonic, the same two chords become an imperfect authentic cadence: it still resolves, but it leaves a little door open. Songwriters use this all the time to make a chorus feel finished without sounding like the whole song has stopped dead.
The same logic applies in minor keys. In A minor the perfect cadence is E (or E7) to Am. Because the natural minor scale has no leading note a semitone below the tonic, the dominant chord is usually raised to major (E rather than Em) so that the G sharp pulls strongly up to A. That raised note is what gives a minor-key cadence its bite, and it is worth getting comfortable with if you write in minor keys.
Why cadences matter for songwriters
Cadences shape the breathing of a song. Use a half cadence to keep momentum across a verse, then a strong perfect cadence to nail the end of a chorus. If a section feels like it stops too abruptly, you may be landing on a perfect cadence too early. If it never seems to settle, you might be avoiding the tonic altogether.
Cadences also interact with melody. A melody note that lands on the tonic over a V to I move feels conclusive; the same chords with the melody resting on the third or fifth feel a little more open. For more on lining notes up with chords, see our guide to writing a melody over chords.
How to spot and use cadences
- Find the phrase endings first. Listen for where the music naturally breathes, then look at the last two chords.
- Label them in Roman numerals. Translating to I, IV, V, and vi makes the pattern obvious and easy to move to other keys.
- Match the cadence to the job. Comma at the end of a line, full stop at the end of a section, surprise when you want to delay resolution.
If Roman numerals are new to you, the Nashville Number System and the circle of fifths both make these relationships easier to visualise. Cadences are also a core part of the common chord progressions you already hear every day.
Common mistakes to avoid
A few habits trip people up when they first start writing with cadences on purpose rather than by ear.
- Resolving too often. If every line ends on a strong perfect cadence, a song can feel stop-start and predictable. Save the full-stop sound for the moments that genuinely need closure, and let half cadences carry the in-between phrases.
- Confusing a half cadence with a perfect cadence. Ending on V is not the same as moving from V to I. A half cadence leaves you on the dominant; it is a question, not an answer. Listen for whether the music actually lands home or just leans towards it.
- Forgetting the leading note in minor keys. Using the unaltered minor v chord weakens the pull to the tonic. Raise it to a major (or dominant seventh) chord when you want a convincing resolution.
- Treating the deceptive cadence as a final ending. V to vi delays resolution rather than providing it. Use it to extend a phrase, then follow up with a genuine perfect or plagal cadence so the section can still close.
Frequently asked questions
What is the most common cadence in pop music?
The perfect (authentic) cadence, V to I, is the most common because it gives the clearest sense of resolution. Many pop choruses end on this move to make the hook feel finished and satisfying.
Is a cadence always two chords?
Most cadences are described as a two-chord move because the final two chords define the sense of arrival. In practice the chords leading up to them set up the expectation, but the cadence itself is named after that last pair.
What is the difference between a perfect and a plagal cadence?
A perfect cadence is V to I (G to C in C major) and sounds strong and conclusive. A plagal cadence is IV to I (F to C) and sounds softer and more relaxed, which is why it is associated with the “Amen” at the end of hymns.
Can a cadence appear in the middle of a piece?
Yes. Cadences mark the end of phrases, and a piece is made up of many phrases, so you will hear cadences throughout, not only at the very end. Half and deceptive cadences in particular tend to appear mid-piece to keep momentum going, while the strongest perfect cadence is usually saved for the final bars.
