The ii–V–I Progression
If jazz harmony has a heartbeat, this is it. Three chords, descending by fifths, landing home every single time.
What is the ii-V-I progression?
Using Roman numeral analysis, ii-V-I is built from the 2nd, 5th, and 1st degrees of a major key. In C major: Dm (ii), G (V), C (I). Each chord's root drops by a perfect fifth into the next, which is the smoothest, most gravitational-feeling root motion in tonal harmony.
Why jazz musicians live on this progression
Nearly every jazz standard is stitched together from ii-V-I progressions, often several per chorus, sometimes stacked back to back through different keys. Because the root motion by descending fifths is so strong, ii-V-I is the default way jazz harmony signals "we're arriving somewhere new" — mastering it unlocks the vocabulary of the entire style.
Common questions
What is the ii-V-I progression?
A progression on the 2nd, 5th, and 1st degrees of a major key — Dm, G, and C in C major.
Why is ii-V-I so important in jazz?
It appears constantly in jazz standards. Its descending-fifths root motion makes it the strongest, most natural way to arrive at a key.
How is ii-V-I different from I-IV-V?
Both move through subdominant and dominant to tonic, but ii-V-I starts on a minor chord and its descending-fifths motion gives smoother voice leading.
What are the ii, V, and I chords in F major?
Gm (ii), C (V), and F (I) — the same shape as Dm-G-C, moved to F major.
Play ii-V-I in any key, instantly
Melody Monkey visualizes chord progressions on a live guitar, bass, ukulele, or piano.
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