Bags’ Groove Chord Progression & Harmonic Analysis

Chord progression

Analyzed excerpt

Form: 12-bar blues · Bars 1–12

F7 | Bb7 | F7 | F7 | Bb7 | Bb7 | F7 | F7 | Gm7 | C7 | F7 D7 | Gm7 C7

This is a short excerpt quoted for analysis, not the full chart, and this composition is very likely still in copyright. Published versions and recordings disagree with each other about the rest of the tune, and often about these bars too.

The books behind this page

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.

Start here Project 03 · Harmony

Harmonic analysis

Key

F major

Tonal center

F

Confidence

High

Chords analysed

14

Chord	Roman numeral	Function	What it is doing	Confidence
F7	I7	Tonic	F7 is the tonic, but built as a dominant seventh — the sound that defines the blues. The tonic keeps a b7 and stays at home anyway. Also readable as V7/IV.	Medium
Bb7	IV7	Predominant	Bb7 is the IV of a blues, built as a dominant seventh. In this context that is its normal quality, not a dominant of anything.	High
F7	I7	Tonic	F7 is the tonic, but built as a dominant seventh — the sound that defines the blues. The tonic keeps a b7 and stays at home anyway.	High
F7	I7	Tonic	F7 is the tonic, but built as a dominant seventh — the sound that defines the blues. The tonic keeps a b7 and stays at home anyway. Also readable as V7/IV.	Medium
Bb7	IV7	Predominant	Bb7 is the IV of a blues, built as a dominant seventh. In this context that is its normal quality, not a dominant of anything.	High
Bb7	IV7	Predominant	Bb7 is the IV of a blues, built as a dominant seventh. In this context that is its normal quality, not a dominant of anything.	High
F7	I7	Tonic	F7 is the tonic, but built as a dominant seventh — the sound that defines the blues. The tonic keeps a b7 and stays at home anyway.	High
F7	I7	Tonic	F7 is the tonic, but built as a dominant seventh — the sound that defines the blues. The tonic keeps a b7 and stays at home anyway.	High
Gm7	ii	Predominant	Gm7 is the ii chord of F: the classic predominant. It prepares the dominant and almost always moves to it.	High
C7	V7	Dominant	C7 is the dominant of F. Its third and seventh form a tritone, and that tritone is what makes the tonic feel due.	High
F7	I7	Tonic	F7 is the tonic, but built as a dominant seventh — the sound that defines the blues. The tonic keeps a b7 and stays at home anyway.	High
D7	V7/ii	Dominant	D7 is functioning as V7/ii: a secondary dominant. It is the dominant of G, not of the home key, so it borrows the pull of a V-I and points it at ii instead.	High
Gm7	ii	Predominant	Gm7 is the ii chord of F: the classic predominant. It prepares the dominant and almost always moves to it.	High
C7	V7	Dominant	C7 is the dominant of F. Its third and seventh form a tritone, and that tritone is what makes the tonic feel due.	High

What the analyzer found in it

ii - V7 - I7Gm7 - C7 - F7

A complete ii-V-I in F. Predominant, dominant, tonic: the sentence jazz harmony is built out of.

ii - V7Gm7 - C7

A ii-V pointing at F, which never arrives. The preparation is complete, the resolution is not.

half cadenceC7

The progression stops on the dominant of F — a half cadence. It is unfinished on purpose.

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 →

Why this example matters

Numbered against F major, the excerpt is I7 – IV7 – ii – V7 – V7/ii. Inside those 14 chords there is a complete ii-V-I and at least one secondary dominant. Take the roots away and keep the third and seventh. In F7 that is A and Eb. Those two notes decide where the progression is going, and hearing them move is worth more than naming the chords. Now’s the Time, Billie’s Bounce and Straight, No Chaser use the same device, which is the argument for learning it once properly rather than three times by accident.

How the rest of Bags’ Groove goes

A twelve-bar blues built on a short riff with a distinctive rhythmic hitch in it, stated and then answered. The harmony is standard and the tempo is medium, which is the point: the tune exists to be a comfortable vehicle rather than a challenge, and it is called at sessions precisely when a group wants to play rather than to negotiate. The one thing to get right is the rhythm of the riff, which is more specific than it looks on paper and is usually learned by ear.

Bags’ Groove on record

Milt Jackson wrote it — “Bags” was his nickname — and recorded it in 1952. Its fame comes from the Miles Davis session of Christmas Eve 1954, which paired Jackson with Thelonious Monk and produced two long takes that are among the most discussed performances in the music, partly for what Monk does and does not play behind Davis’s solo. The tune itself is simple; the recording is not.

Analyze this progression

Open these chords in the analyzer and change them. Move one chord, substitute a dominant, take the ii away — the reading updates and tells you what you just did.

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Bags’ Groove — Chord Progression & Harmonic Analysis

Chord progression

The books behind this page

Jazz Harmony

Harmonic Narrative

Jazz Guitar Comping

Harmonic analysis

What the analyzer found in it

Why this example matters

How the rest of Bags’ Groove goes

Bags’ Groove on record

Analyze this progression

Related

ii-V-I

Secondary dominants

Roman numeral analysis

Now’s the Time

Billie’s Bounce

Straight, No Chaser

Jazz chord progressions