An interrupted cadence is one of the most recognizable ways composers delay a musical ending.
It creates surprise by seeming to resolve normally, then shifting to an unexpected chord that keeps the music moving.
What Is an Interrupted Cadence?
An interrupted cadence is a cadence in which the harmony strongly suggests a full stop, but the final resolution is postponed.
In tonal music, it usually occurs when a dominant chord resolves to an unexpected chord instead of the tonic.
The result is a brief break in expectation rather than a complete ending.
In common-practice harmony, the most familiar version is the move from a dominant chord, often V, to a vi chord in a major key or VI in a minor key.
Because the ear expects tonic resolution, this shift feels like a harmonic surprise.
That surprise is exactly what makes the interrupted cadence so effective.
Why Does an Interrupted Cadence Sound Surprising?
Western listeners are trained by thousands of pieces in tonal harmony to hear the dominant as unstable and the tonic as the point of rest.
A perfect authentic cadence, such as V to I, answers that expectation clearly.
An interrupted cadence begins with the same tension but refuses the expected resolution.
This creates a sense of suspense, as if the sentence was about to end and then continued.
Composers use that effect to extend a phrase, intensify emotion, or prepare a later arrival.
It is one of the simplest harmonic ways to keep music from settling too soon.
How to Identify an Interrupted Cadence
To identify an interrupted cadence, listen for three things: dominant function, expected closure, and an unexpected substitute chord.
If the passage sounds like it is heading toward a strong ending but lands somewhere else, you may be hearing an interrupted cadence.
- The progression usually approaches a dominant chord with clear tension.
- The listener expects tonic resolution.
- Instead of tonic, the harmony resolves to a non-tonic chord, often vi or VI.
- The phrase continues rather than ending decisively.
In Roman numeral analysis, the key feature is not the exact chord label alone, but the break in expectation.
A deceptive motion from V to vi is the classic textbook example, but the broader idea is any cadential setup that avoids the anticipated tonic.
Interrupted Cadence vs. Deceptive Cadence
Many music theory books treat interrupted cadence and deceptive cadence as closely related terms, and in many contexts they are effectively the same thing.
In practice, “deceptive cadence” is the more common label in English-language theory, while “interrupted cadence” emphasizes the sudden interruption of the expected cadence.
Both terms describe a dominant-to-non-tonic resolution that avoids closure.
The difference is often pedagogical rather than musical.
If you are studying harmony, it helps to know both labels so you can recognize the concept in different textbooks and analytical traditions.
Interrupted Cadence vs. Perfect Authentic Cadence
A perfect authentic cadence creates the strongest sense of completion in tonal music.
It usually moves from V to I, with the tonic in the highest voice and both chords in root position.
By contrast, an interrupted cadence denies that final arrival.
This difference matters because the two cadences serve opposite structural roles.
A perfect authentic cadence ends a phrase or section with certainty.
An interrupted cadence extends the phrase, resets tension, or leads into new material.
One closes, the other delays.
Common Chord Patterns in an Interrupted Cadence
The most common interrupted cadence follows this pattern in a major key:
- Predominant harmony: ii or IV
- Dominant harmony: V or V7
- Unexpected resolution: vi
In a minor key, the analogous resolution often moves from V to VI.
Because minor keys already contain more flexible scale-degree spelling, the effect can be especially expressive.
Composers may also use inversions, sevenths, or cadential six-four chords before the deceptive move.
Examples of standard harmonic motion include:
- V–vi in major
- V7–vi in major
- V–VI in minor
- Cadential six-four to V, then deceptive resolution
These progressions work because they preserve the dominant’s tension while redirecting it to a different chord.
The ear hears the setup clearly, which makes the twist feel deliberate rather than random.
What Is an Interrupted Cadence Used for in Composition?
Composers use an interrupted cadence to create several effects at once.
It can prolong a phrase, heighten emotional ambiguity, and support storytelling through harmony.
Because the expected arrival is withheld, the music feels open-ended.
Some of the most common functions include:
- Extending a musical sentence without ending it too early
- Creating surprise in a lyrical or dramatic passage
- Connecting two phrases smoothly without a hard stop
- Supporting text that suggests longing, uncertainty, or hesitation
In song form, an interrupted cadence can keep a verse from feeling complete before the chorus arrives.
In instrumental music, it can delay structural closure and make the eventual cadence more powerful.
Examples of Interrupted Cadence in Music
Interrupted cadences appear frequently in Classical, Romantic, pop, and film music.
In common-practice repertoire, they are often used in themes that need continuation rather than closure.
In popular music, they can appear at the end of a lyric line, just before a chorus, or at the close of a verse.
Typical listening cues include a dominant chord followed by a sudden shift to a chord that sounds softer, less stable, or harmonically unexpected.
If the music seems to “swerve” away from the finish line, the cadence is probably interrupted.
Because the technique is so adaptable, it shows up in many genres under different harmonic surfaces.
The underlying principle remains the same: a strong expectation of resolution is denied at the last moment.
Why Interrupted Cadences Matter in Music Theory
Understanding what an interrupted cadence is helps you hear how composers control structure, pacing, and emotional direction.
Cadences are not just endings; they are markers of syntax in music, similar to punctuation in language.
An interrupted cadence functions like a sentence that pauses mid-thought.
For analysis, it is useful because it reveals how tonal expectation works.
For performance, it helps musicians shape phrasing and timing so the surprise feels intentional.
For composition, it provides a reliable way to avoid closure while still sounding coherent.
How Students Should Analyze an Interrupted Cadence
When analyzing a passage, check the harmonic goal, not just the final chord.
Start by identifying whether the music builds dominant tension.
Then ask whether that tension resolves to tonic or elsewhere.
- Locate the cadential approach near the end of a phrase.
- Mark the dominant function and any cadential six-four motion.
- Determine whether the final harmony is tonic or a substitute chord.
- Listen for whether the phrase truly ends or continues forward.
If the dominant resolves to vi in a major key or VI in a minor key, the cadence is likely deceptive or interrupted.
If the passage ends strongly on I, it is not interrupted.
Careful listening and Roman numeral analysis usually make the answer clear.
Key Terms to Remember
- Cadence: a harmonic arrival or punctuation point in music
- Dominant: the chord built on scale degree 5, usually creating tension
- Tonic: the home chord, where resolution feels stable
- Deceptive cadence: a dominant resolution that avoids tonic
- Interrupted cadence: another term often used for the same effect
Knowing these terms makes it easier to describe the cadence precisely and to compare it with authentic, half, and plagal cadences in tonal analysis.