Jazz standards are not random sequences of chords. They are built from a small set of recurring harmonic patterns — and once you learn to recognize them, any lead sheet becomes instantly readable. The II-V-I you learned in the previous lesson is the core engine. In this lesson, you will discover how jazz musicians chain it into longer progressions that power entire songs.
Four patterns cover the vast majority of what you will encounter in real standards: the turnaround, the deceptive resolution to the relative minor, the backdoor progression, and passing diminished chords. Master these and any lead sheet becomes a map you can read at a glance.
💡 This lesson builds on The II-V-I Progression. Make sure you are comfortable with both the major and minor versions before continuing.
A turnaround is a short progression — usually two or four chords over two bars — that appears at the end of a section and loops the music back to the beginning. Its job is to leave the tonic, create just enough tension, and deliver the music back to the I chord for the next phrase. You will encounter turnarounds at the end of every A section in an AABA form, and at the end of each chorus in a standard.
The most common turnaround in jazz is the I-vi-ii-V:
Cmaj7 — Am7 — Dm7 — G7
I — vi — ii — V : the last two chords (Dm7-G7) are a II-V that resolves back to I
Notice the root movement: C → A → D → G — four steps counter-clockwise on the Circle of Fifths. The turnaround is essentially a II-V-I with an extra departure chord (Am7) added at the front. It takes the music on a brief harmonic journey before bringing it home.
Three common variations you will encounter in standards:
The VI7 variation (A7 instead of Am7) is confirmed by Mark Levine in The Jazz Theory Book: "Today's players usually play a dominant 7th chord rather than a minor 7th chord as the VI chord in a I-VI-II-V." The A7 acts as a secondary dominant — it briefly tonicizes Dm7, pulling toward it with extra urgency before the II-V-I completes.
The turnaround also exists in minor:
Cmaj7 — A7 — Dm7 — G7
I — VI7 — II — V : The A7 pulls more aggressively toward Dm7 — very common in bebop
🎹 Play It — The Turnaround
Play both versions in C, slowly, and listen to how the VI chord changes the energy:
Cmaj7 - Am7 - Dm7 - G7 - Cmaj7 (soft)
Cmaj7 - A7 - Dm7 - G7 - Cmaj7 (bebop drive)
Notice how A7 creates a stronger pull toward Dm7 — that single note change (C to C#, the major 3rd of A7) adds a surge of forward energy that Am7 does not have.
A deceptive resolution happens when a V7 chord resolves to an unexpected chord instead of the I. In jazz, the most common deceptive resolution lands on the VIm7 — the relative minor — instead of the Imaj7. In C major:
Dm7 — G7 — Am7
ii - V - vi : G7 resolves to Am7 instead of Cmaj7 — the "false landing"
The ear expects Cmaj7 after G7 — and instead gets Am7. It does not sound wrong, because Am7 and Cmaj7 share three notes (C, E, G). But the mood shifts from bright to melancholic, and the music briefly inhabits the relative minor before returning to major.
This progression is so characteristic of Autumn Leaves that some musicians call it the "autumnal cadence." The tune moves constantly between G major and E minor using this exact pattern — the V7 sometimes resolving to the major tonic, sometimes to the relative minor, creating that bittersweet quality that defines the song.
In practice, the deceptive resolution is almost always followed by another II-V that brings the music back to the main key or moves it into a new section. It is a pivot point, not a final destination.
🎹 Play It — Authentic vs Deceptive
Play these two resolutions back to back, starting from the same G7:
Dm7 - G7 - Cmaj7 (authentic — expected, bright)
Dm7 - G7 - Am7 (deceptive — surprising, melancholic)
The surprise of the second resolution — that feeling of "almost home but not quite" — is one of the most expressive tools in jazz harmony. Once you hear it, you will recognize it everywhere.
The standard route to the tonic is the V7 → I resolution — the II-V-I you already know. This is sometimes called the "front door." The backdoor progression approaches the tonic from the opposite direction — borrowing chords from the parallel minor key to arrive at the I chord from an unexpected angle.
Fm7 — Bb7 — Cmaj7
iv7 - bVII7 - I : borrowed from C minor, resolving to C major
In C major, Fm7 and Bb7 come from C minor — they are borrowed chords. The Bb7 sits a whole tone below the tonic C, and its resolution upward gives a warm, soulful quality completely different from the sharp, leading-tone pull of a G7. Sometimes the Fm7 is omitted and the progression is simply Bb7 → Cmaj7.
Why does Bb7 → Cmaj7 work? Because Bb7 (Bb - D - F - Ab) shares the note F with the key of C, and the voice leading from Ab to G (the 5th of C) is smooth. The resolution feels inevitable even though it comes from an unexpected direction — hence "backdoor."
You will find the backdoor in standards like There Will Never Be Another You and Just Friends. It gives those tunes their characteristic warm, bluesy color at the resolution points.
🎹 Play It — Front Door vs Back Door
Play both routes to Cmaj7 and hear the difference:
Dm7 - G7 - Cmaj7 (front door — sharp, leading tone, classical feel)
Fm7 - Bb7 - Cmaj7 (back door — warm, soulful, bluesy)
The backdoor feels like it arrives from a completely different emotional world — darker, more relaxed, less "inevitable" than the V7 → I. That contrast is exactly what makes it so effective.
A passing diminished chord is a diminished 7th chord inserted between two diatonic chords to create a smooth chromatic connection — usually in the bass line. It does not change the key or create a strong harmonic resolution; it simply adds tension for one beat or one bar before the next chord arrives.
The two most common forms in jazz:
The C#dim7 connects C to D by ascending chromatically through the bass. The Abdim7 connects Am7 to G7 by descending chromatically — a very common move in jazz standards that smooths the line from the VIm7 toward the V7.
Passing diminished chords appear frequently in stride piano and traditional jazz standards. You will find them in Fly Me to the Moon, All of Me, and many other classic tunes as single-bar connectors between more stable chords.
🎹 Play It — With and Without the Passing Diminished
Compare the two versions and notice how the diminished chord adds color:
Cmaj7 - Dm7 - G7 - Cmaj7 (without — smooth but plain)
Cmaj7 - C#dim7 - Dm7 - G7 - Cmaj7 (with — chromatic tension)
The C#dim7 lasts only one beat or one bar, but it transforms the connection from Cmaj7 to Dm7 into something far more interesting. It is one of the easiest ways to add sophistication to a simple progression.
With these four patterns in your vocabulary, here is how to approach any lead sheet:
Find the II-V pairs first. Any time you see two chords whose roots are a fifth apart (e.g., Dm7 → G7), you have a II-V. Ask: what key does this V7 resolve to?
Look for the I-vi-ii-V turnaround at the end of each section. It is the most common pattern in AABA forms and most often occupies the last two bars of an A section.
When the V7 resolves to VIm7 instead of I, you have a deceptive resolution. The music is touching the relative minor before returning.
When you see a bVII7 chord (e.g., Bb7 in the key of C), look for the backdoor — it almost always resolves up a whole step to the tonic.
When you see a dim7 chord between two stable chords, it is a passing diminished — just a chromatic connector, not a key change.
Key takeaways:
Turnaround (I-vi-ii-V): leaves the tonic and loops back — the backbone of AABA forms. Common variations: I-VI7-ii-V (more drive) and III-VI-ii-V (extended departure)
Deceptive resolution: V7 resolves to VIm7 instead of Imaj7 — a bittersweet "false landing" on the relative minor
Backdoor progression: iv7 - bVII7 - I, borrowed from the parallel minor — warm, soulful approach to the tonic from below
Passing diminished: a dim7 chord connecting two diatonic chords chromatically — brief tension, smooth resolution
When reading a lead sheet: find the II-V pairs first, then identify the turnarounds, deceptive resolutions, backdoors, and passing diminished chords around them
You have seen secondary dominants at work in the turnaround (A7 pulling toward Dm7) and in the backdoor (Bb7 borrowed from minor). The next lesson explores these chords in full — what they are, how they work, and how to use them to enrich any progression: