You have felt it a thousand times. That moment when a song “lands” and your whole body knows it is over. Or that end of verse that leaves you breathless just before the chorus. These sensations have a name, a mechanism, and four formulas you will be able to play in five minutes. After modes and the center of gravity, here is the lesson where everything we have built converges: cadences, the punctuation of music.
The Essential in 30 Seconds
A cadence is a chord progression that creates a movement of tension then resolution, like punctuation at the end of a musical phrase. It relies on the fact that certain chords sound stable (degree I, the tonic, which is home) and others unstable (degree V, the dominant, which pulls toward the tonic). There are four essential cadences: the perfect cadence (V to I, strong resolution), the plagal cadence (IV to I, gentle resolution), the half cadence (to V, suspension) and the deceptive cadence (V to vi, surprise effect). It is cadences that give music its sensation of moving forward, concluding or remaining suspended.
1. Tension and resolution: the engine of music
Return to degrees I, IV and V and their functions: the tonic is rest, the subdominant is movement, the dominant is tension. A chord progression is a journey between these states. And certain moments of this journey are so codified, so effective, that they have a name: cadences.
The principle fits in two words. Tension: the instability that makes you want to hear what comes next. Resolution: the return to rest that satisfies that expectation. Moving from an unstable chord to a stable chord is the engine of tonal music, the kind you play every day. You already feel all this when listening: it only remains to put names on it.
(A vocabulary note before moving forward: here, “cadence” designates a chord progression formula that punctuates a phrase. Not the virtuoso solo passage of a concerto, which is also called a cadenza. Two identical words, two meanings.)
2. The 4 essential cadences
A progression is a sentence; cadences are its punctuation. Four signs are enough. Listen to them before naming them:
Two notes worth gold. The half cadence is not “going to V”: it is ending a phrase on V. V is a tension chord; ending on it is ending on a question. And the deceptive cadence has a hidden logic: vi (Am in C major) shares two notes with I (C and E). It is a close cousin of the tonic: resolution happens, but at the neighbor’s house. Hence this “almost, but not quite” effect.
3. Perfect or plagal cadence: two ways to conclude
The two concluding cadences return to the tonic, but not with the same energy. The perfect (V → I) is assertive, definitive: it is the one we hear at the very end of Beethoven’s 9th symphony, hammered so no one doubts it is over. It sounds most “final” when both chords have their root in the bass (G then C, low notes G then C).
The plagal (IV → I) concludes smoothly, without passing through the strong tension of V. It is the “Amen” sung at the end of religious hymns, and we hear this plagal gentleness in the title phrase of the Beatles’ Let It Be. Two periods, two characters: the choice depends on the emotion sought.
4. Why the dominant pulls toward the tonic
Here is the convergence of the entire series. The strength of V → I is not a convention: it is mechanics, and you already know all the parts.
First part: the leading tone. The G chord contains B, the note a single half step below the tonic, the one that “demands” its C since the lesson on degrees. When you play G then C, the B rises to rest. This is already true with the simple triad.
Everything we planted converges here: the half step (lesson 2), the tritone (lesson 3), the leading tone (lesson 5), the diminished vii° (lesson 6). The perfect cadence is not a learned rule: it is the sum of all these attractions, which point to the same note.
5. Composing a progression with cadences
Dissecting the cadences of a I-V-vi-IV
Take the queen loop of pop, the major and minor chords of the scale in action: I-V-vi-IV (C-G-Am-F). Dissect it with your new eyes: C → G establishes tension (I → V)… and G → Am is a deceptive cadence! The loop dodges the period and relaunches. Then Am → F goes through the subdominant, and F → C closes gently (plagal). This loop is a machine for never concluding: that is why it can loop a hundred times without tiring.
Building your own progression step by step
The three-question method. One: where is your home? (choose your I). Two: what path? (move away via IV or vi, tense via V). Three: what punctuation? Conclude sharply (V → I), conclude gently (IV → I), suspend (stop on V, perfect at the end of a verse just before a chorus that resolves), or surprise (V → vi, the false ending that offers one more round). Delaying resolution creates desire: the songs that give you chills play precisely with this expectation.
Want to go from theory to fingers right away? Start with your first chord progressions on guitar: ten easy loops, no barre chords, to play and sing.
On your guitar: three challenges this week
Challenge 1. Play C-F-G-C (I-IV-V-I), then replace the ending with G-Am (V-vi). Feel the difference between the period and the surprise. Do it until you can predict it by ear.
Challenge 2. Take a song you play and spot ONE cadence: where is the period? Is there a half cadence at the end of the verse? One finding is enough: you will never read a chart the same way again.
Challenge 3. Compose 4 measures that end with a half cadence, then 4 others that resolve with a perfect cadence. You just wrote a question and its answer: that is the structure of half the songs in the world.
Frequently Asked Questions About Cadences
What is a cadence in music?
A cadence is a chord progression that punctuates a musical phrase by creating a movement of tension then resolution. It works because certain chords sound stable, like degree I which plays the role of home, and others unstable, like degree V which pulls toward this home. Moving from an unstable chord to a stable chord produces a sensation of resolution, it is the emotional engine of tonal music. We feel cadences when listening, even without knowing their names.
What is a perfect cadence?
The perfect cadence is the progression from degree V to degree I, that is from the dominant to the tonic. In C major, this corresponds to G followed by C. It is the strongest resolution in all of music, the one that gives the impression that a piece is truly finished, like a period. Its strength comes from the leading tone, the note located a half step below the tonic, which is contained in the dominant chord and irresistibly calls for resolution.
What is the difference between perfect cadence and plagal cadence?
The perfect cadence chains degree V to degree I (G to C in C major) and produces a strong and assertive resolution. The plagal cadence chains degree IV to degree I (F to C), with a gentler and more soothing resolution, often called the Amen cadence because of its use in religious songs. Both return to the tonic, but the perfect creates a sharp conclusion where the plagal offers a rounded conclusion. The choice between the two depends on the emotion sought.
Why do certain chord progressions sound good?
A progression sounds good when it intelligently organizes tension and resolution between its chords. Each chord plays a role: the tonic (I) establishes stability, the subdominant (IV) moves away from rest, the dominant (V) creates tension that calls for a return. A very widespread progression like I-V-vi-IV chains these movements fluidly, which explains why we find it in hundreds of songs. These are not magic formulas, but logical applications of cadences, which anyone can therefore recreate.
How to properly end a piece of music?
To conclude a piece sharply, we use a perfect cadence, that is the dominant chord (degree V) followed by the tonic chord (degree I). In C major, ending on G then C gives this sensation of period. For a gentler and more soothing ending, we prefer a plagal cadence, that is degree IV followed by degree I (F then C). And to surprise the listener instead of concluding, we can use a deceptive cadence, where degree V resolves to degree vi instead of I.
In Summary
- A cadence punctuates a musical phrase by a tension → resolution path between functions (rest, movement, tension).
- Four essential ones: perfect (V→I, the period), plagal (IV→I, the gentleness), half cadence (stop on V, the question), deceptive (V→vi, the surprise at I’s cousin).
- V→I is mechanical, not magic: the leading tone rises a half step, and in V7 the tritone closes. vii° shares this dominant function.
- Pop loops dodge conclusion: I-V-vi-IV relaunches with its deceptive cadence. Conclude or relaunch, it is a choice.
- Delaying resolution creates desire: half cadence before the chorus, false ending before the true one. Expectation is an instrument.
You no longer chain chords: you punctuate phrases. Only one question remains, the biggest: what makes an entire piece hold together around a single note?
Hear your cadences for real
You just understood punctuation. Twelve Assistant’s progression editor lets you assemble your charts in degrees and hear them, directly in your browser. No account, no credit card.
Open the demoHave you followed the series this far?
The free Twelve Assistant account unlocks the complete demo and sends you the rest (new tools, videos) once a week. You unsubscribe when you want.
Create my free accountNext in the Series
Cadences all revolve around the same anchor point: the tonic. But what makes an entire piece “belong” to one note? Why do we say a song is “in G major”?
It is time to name the framework that has been organizing everything from the start: tonality, the framework that organizes scales, degrees and cadences.
Lesson 9: Key and Tonality → ← Previous: Lesson 7: Guitar Modes Explained · Back to Music Theory for Guitar