From the blog · May 22, 2026

How to write a chord progression in any key

Chord progressions are the harmonic skeleton of every song. Here's how to build one from scratch — whether you want the warm familiarity of pop, the tension of jazz, or the grit of blues.

What a chord progression actually is

A chord progression is a sequence of chords that repeats throughout a section of a song. The verse of "Let It Be" uses Am–G–F–C. The chorus of "Wonderwall" uses Em7–G–Dsus4–A7sus4. The 12-bar blues shuffles through I7–IV7–V7. Each of these is a chord progression — a small loop of harmony that the melody floats on top of.

Most progressions use between 2 and 4 chords. You rarely need more. The power comes from the order and the emotional tension between the chords, not from using unusual ones.

The chords available in any key

Every major key gives you seven chords for free — one built on each note of the scale. In the key of C major they are:

These same relationships hold in every major key. In G major, the I is G, the IV is C, the V is D, the vi is Em. Transpose the pattern and you get the same emotional flavour in a new key.

The four chords that do most of the work

Of the seven available chords, four do the heavy lifting in most songs: I, IV, V, and vi. Here's why each matters:

• I (tonic) — home. Where the music wants to rest. Starting or ending here feels natural and resolved.
• IV (subdominant) — lift. Moving from I to IV feels like a step upward in emotional brightness. It's stable but creates gentle forward motion.
• V (dominant) — tension. The strongest pull toward the tonic. A progression that hits V wants desperately to resolve back to I. This tension is what makes music feel like it's going somewhere.
• vi (submediant) — emotion. The relative minor. It shares notes with the I chord but feels sadder and more introspective. Moving from I to vi shifts the emotional weight without leaving the key.

The most famous progressions

A handful of progressions underlie an enormous number of songs. Knowing them by ear will help you recognise them when you hear them — and steal them when you need them.

I–V–vi–IV (C–G–Am–F)

The "four-chord song". Used in hundreds of pop hits including "Let Her Go" (Passenger), "Someone Like You" (Adele), "Africa" (Toto), and "No Woman No Cry" (Bob Marley). The power is in how the vi catches you emotionally after the brightness of I and V, before the IV returns home. It loops perfectly — you can repeat it forever without it feeling unresolved.

I–IV–V–I (C–F–G–C)

The simplest complete harmonic journey: home → lift → tension → resolution. Found in rock, folk, country, and gospel. It's the harmonic equivalent of a complete sentence. Most 12-bar blues progressions are a variation of this over three chords.

ii–V–I (Dm7–G7–Cmaj7 in C)

The cornerstone of jazz. The ii chord prepares the dominant, the V creates maximum tension, and the I resolves it completely. Every standard you'll ever play — "Autumn Leaves", "All The Things You Are", "Blue Bossa" — is built from ii–V–I cycles in different keys.

i–VII–VI–VII (Am–G–F–G in A minor)

A minor-key rotation. Starting on the relative minor gives immediate darkness. Used in "Stairway to Heaven", "Wicked Game", and countless R&B songs. The VII coming after the tonic gives a descending, falling feel.

How to write your own progression: a practical method

The cleanest way to start is this:

1. Pick a key. If you're singing or writing for a singer, find the key that fits the vocal range first. If you're writing on guitar or piano, pick whatever key is comfortable to play in.
2. Decide on major or minor. Major keys feel brighter and more resolved. Minor keys feel darker, more emotional, or more dramatic. This one decision shapes the whole mood.
3. Choose 3 or 4 chords from the scale. Start with I, IV, V, and vi. Those four chords can take you anywhere in pop, folk, and rock. For jazz, start with ii, V, and I with 7th extensions.
4. Try different orderings. The same chords in a different order feel completely different. C–Am–F–G sounds different from Am–F–C–G even though it uses identical chords.
5. Play it on loop and sing over it. Most of your harmonic decisions should be made with the melody in your head, not in theory. If it sounds right, it is right.

Progressions by style

Different genres have characteristic harmonic vocabularies. Understanding these makes your songwriting more intentional.

Pop

Pop progressions are deliberately simple. The I–V–vi–IV is the workhorse, but I–IV–V–I, I–vi–IV–V, and I–iii–IV–V all appear constantly. The goal is instant emotional impact and a hook that anyone can follow. Pop avoids diminished and augmented chords almost entirely.

Jazz

Jazz harmony is built on 7th chords and ii–V–I motion. A typical 32-bar jazz standard might contain 8 or more ii–V–I cycles in different keys, often moving through distant key centres quickly. Secondary dominants (a V7 chord that resolves to a chord other than the tonic) are everywhere. The iii–VI–ii–V turnaround is as common as the I–V–vi–IV is in pop.

Blues

Blues uses dominant 7th chords on every degree — I7, IV7, V7 — regardless of what a major scale would suggest. This constant use of the b7 (the blue note) creates the characteristic blues tension. The 12-bar form (four bars of I, two of IV, two of I, one of V, one of IV, two of I with a turnaround) is the most durable song form in Western music.

Folk and country

Folk keeps it honest: I, IV, and V. Country adds the iii and vi more often, and borrows from the minor scale occasionally (the bVII chord is common, giving a Celtic or Mixolydian flavour). The emphasis is on clarity and singability over sophistication.

Try the generator

The fastest way to explore progressions is to hear them. MusoKit's chord progression generator lets you pick a key, scale, and style — and plays back the progression immediately so you can evaluate it with your ears rather than on paper.