George Gershwin · 1930 · E♭ major · AABA, 32 bars
The turnaround in its unaltered form: tonic, relative minor, predominant, dominant, home. Every substitution a player will ever make in a turnaround is a substitution for one of these four chords.
Analyzed excerpt
Section: A1 · Bars 1–5
Ebmaj7 | Cm7 | Fm7 | Bb7 | Ebmaj7
This is a short excerpt, not the full chart. The composition dates from 1930 and is old enough that it is very likely in the public domain in the United States, which is why the excerpt runs longer here — but copyright status varies by territory and by edition, so treat that as context, not as legal advice.
Every one of these tunes is assembled out of the same handful of harmonic resources. Jazz Harmony is those resources, explained in the order in which they build on each other.
| Chord | Roman numeral | Function | What it is doing | Confidence |
|---|---|---|---|---|
| Ebmaj7 | I | Tonic | Ebmaj7 is the tonic of Eb. It is where the progression is at rest. | High |
| Cm7 | vi | Tonic | Cm7 is the vi chord — the relative minor. It shares three notes with the tonic and often replaces it. | High |
| Fm7 | ii | Predominant | Fm7 is the ii chord of Eb: the classic predominant. It prepares the dominant and almost always moves to it. | High |
| Bb7 | V7 | Dominant | Bb7 is the dominant of Eb. Its third and seventh form a tritone, and that tritone is what makes the tonic feel due. | High |
| Ebmaj7 | I | Tonic | Ebmaj7 is the tonic of Eb. It is where the progression is at rest. | High |
A I-vi-ii-V turnaround: the four-chord loop that sends a section back to its beginning.
A complete ii-V-I in Eb. Predominant, dominant, tonic: the sentence jazz harmony is built out of.
The progression closes with an authentic cadence in Eb.
High, medium and low next to each numeral are judgements about musical context, not probabilities. A low rating marks a bar that can honestly be read more than one way. How the ratings are decided →
In Eb major the excerpt reads I – vi – ii – V7. Inside those 5 chords there is a complete ii-V-I and a turnaround. Play it slowly with only two voices — the third and seventh of each chord. In Bb7 those are D and Ab, and watching where that pair goes next tells you more about the progression than the root movement does. The same device turns up in Autumn Leaves, All The Things You Are and Tune Up, in other keys and at other tempos.
A thirty-two-bar song whose harmony is almost entirely ii-V pairs, one after another, resolving in expected places — which makes it the plainest of the Gershwin standards and the most useful for practice. The lyric is bitter and the music is not, a mismatch the composer used deliberately. For a student it is the tune to bring after Tune Up: the same cadence vocabulary, but distributed across a real song form with phrase lengths that do not line up neatly with the harmony.
From Girl Crazy, 1930 — the third standard to come out of that one show. Chet Baker’s vocal version is the one most often cited, and Ahmad Jamal recorded a trio arrangement that reworks the rhythm substantially. It is called at sessions constantly, partly because it is in a comfortable key for horns and partly because everyone knows it.
Take these bars into the analyzer and interfere with them. The fastest way to learn what a chord was doing is to remove it and read what the analysis says instead.
What this device is, and the other standards in the library that use it.
Read →Joseph Kosma · 1945 · B♭ major / G minor
Chord progression →Jerome Kern · 1939 · A♭ major
Chord progression →Miles Davis · 1953 · D major
Chord progression →The families every standard is assembled from, with examples from the library.
Read →