A Full Chorus of Walking Bass for “Autumn Leaves,” Note by Note

This article is written by Toru Hoshino, a jazz bassist and instructor based in Japan who teaches online lessons to students worldwide. In this article, he breaks down, note by note, a full chorus of a 4-beat walking bass line over “Autumn Leaves.”

This article walks through every single note of a written-out bass line, so it runs long — you may want to bookmark it and come back when you have time to go through it carefully.

A 4-Beat Bass Line for “Autumn Leaves”

Here’s a performance video of the line covered in this article:

What This Bass Line Is Going For

This line is built with a simple concept in mind: straightforward quarter notes with no ghost notes or high-fret jumps, and everything built within the first 3 frets plus open strings — in other words, something simple enough for a beginner to actually play. We’ll go through the A section first, one note at a time.

Note: the chord progression mostly follows a standard, widely used version of “Autumn Leaves,” with a few small personal tweaks along the way.

The Overall Structure

The form goes: A section (8 bars) played twice → B section → C section.

The full bass line covered in this breakdown, bar by bar.

A Section (Bars 1–8)

Bar 1 — Cm7

1st note: C (root)
2nd note: D (2nd)
3rd note: E♭ (m3rd)
4th note: E (a chromatic passing tone leading into the next bar’s F)

That 4th note, E, isn’t actually a chord tone of Cm7 — since the chord is minor, using the major 3rd (E) would normally clash with a minor sound. But here it’s working purely as a chromatic passing tone, bridging smoothly into the F that opens the next bar. Chromatic passing tones like this are something you’ll use constantly in walking bass — it’s well worth getting comfortable using them deliberately.

Bar 2 — F7

1st note: F (root)
2nd note: E♭ (♭7th)
3rd note: D (6th)
4th note: C (5th)

Root → ♭7th → 6th → 5th — a line that descends step by step. It’s comfortable under the fingers and gives the listener a smooth, connected feel.

Bar 3 — B♭△7

1st note: B♭ (root)
2nd note: D (3rd)
3rd note: F (5th)
4th note: E (a chromatic passing tone leading into the next bar’s E♭)

Another chromatic passing tone on the 4th beat, working the same way as in bar 1.

Bar 4 — E♭△7

1st note: E♭ (root)
2nd note: D (7th)
3rd note: C (6th)
4th note: B♭ (5th)

Again, root → 7th → 6th → 5th, descending in order — comfortable to play and smooth to the ear.

Bar 5 — Am7♭5

1st note: A (root)
2nd note: B♭ (♭2nd)
3rd note: C (m3rd)
4th note: E♭ (♭5th)

Am7♭5 is read “A minor seven flat five.” The symbol means “flatten the 5th,” so instead of the regular 5th of A minor (E), it uses E♭.

Bar 6 — D7

1st note: D (root)
2nd note: C (♭7th)
3rd note: B♭ (6th)
4th note: F♯ (3rd)

Bar 7 — Gm6

1st note: G (root)
2nd note: B♭ (m3rd)
3rd note: D (5th)
4th note: F (♭7th)

Bar 8 — Gm

1st note: G (root)
2nd note: F (♭7th)
3rd note: D (5th)
4th note: B♭ (m3rd)

Built Entirely Within 3 Frets

Every position used up through this point was built using only the open string through the 3rd fret.

A 4-beat walking bass line usually changes notes on every single quarter note, so I try to keep position shifts to a minimum wherever I can. On top of that, this line uses a consistent fingering — index finger on the 1st fret, middle finger on the 2nd fret, pinky on the 3rd fret of every string — so no position shifting is needed at all. Keeping movement this minimal makes for a smoother, easier bass line to actually play, so hopefully this is a useful reference for your own fingering choices.

A Section, Second Time (Bars 9–16)

These 8 bars use exactly the same notes as the first time through the A section (bars 1–8), so I’ll skip the detailed breakdown here.

A question I get a lot is whether it’s okay to repeat the same pattern this many times in a row — and especially when you’re starting out, that’s completely fine. In fact, if you force yourself to play something different every single time too early on, your thinking and your hands can’t keep up, and you end up rushing or dragging the time instead.

The goal of this particular bass line is for players who find it hard to build a line on the spot just from chord symbols — to first get comfortable just playing something that’s already written out, and get a feel for “oh, this is what a walking bass line is like.” So whether it’s repetitive or one-pattern, what matters most is keeping a steady, reliable time that the rest of the band can play comfortably against.

B Section (Bars 17–24)

Bars 1–2

Am7♭5: A (root), B♭ (2nd), C (m3rd), E♭ (♭5th)
D7: D (root), C (♭7th), B♭ (♭6th), F♯ (3rd)

These opening two bars of the B section reuse the exact same line as bars 5–6 of the A section. As mentioned above, when the same kind of chord progression repeats, it’s perfectly fine to reuse a pattern you’ve already used elsewhere rather than forcing something new every time — especially while you’re still getting comfortable with swing feel and playing in an ensemble.

Bars 3–4 (Gm Held for Two Bars)

A common question: what do you do when the same chord (here, Gm) holds for two full bars? Treat the two bars as one connected unit rather than two separate ones.

1st note: G (root)
2nd note: G (root)
3rd note: A (2nd)
4th note: A (2nd)
5th note: B♭ (m3rd)
6th note: B♭ (m3rd)
7th note: B (chromatic passing tone into the next bar’s C)
8th note: B (chromatic passing tone into the next bar’s C)

That gives two chromatic passing tones in a row, but since the line is climbing steadily by half steps from the root, it stays comfortable to play and doesn’t sound out of place.

Note that the root isn’t played on the first beat of bar 8 of the B section here — instead, the line is built with bar 3’s Gm root (G) connecting smoothly up toward bar 5’s Cm7 root (C).

Bars 5–8

These 4 bars use exactly the same notes as bars 1–4 of the A section.

Bar 5 — Cm7: C (root), D (2nd), E♭ (m3rd), E (chromatic passing tone into F)
Bar 6 — F7: F (root), E♭ (♭7th), D (6th), C (5th)
Bar 7 — B♭△7: B♭ (root), D (3rd), F (5th), E (chromatic passing tone into E♭)
B♭△7 → E♭△7: E♭ (root), D (7th), C (6th), B♭ (5th)

C Section (Bars 25–32)

Bars 1–2

Am7♭5: A (root), B♭ (2nd), C (m3rd), E♭ (♭5th)
D7: D (root), C (♭7th), B♭ (6th), F♯ (3rd)

Same line used in bars 5–6 of the A section, reused here once again.

Bars 3–4 (Two Chords Per Bar)

Progression: Gm7 → G♭7 → Fm7 → E7.

A common question: when a single bar has two different chords in it, how do you approach that? Here, I deliberately kept things simple and just played the root of every chord, without much movement.

You absolutely could move around more here if you wanted to — but this tune cycles through a lot of similar-sounding chord movement throughout, which makes it easy to get “lost” (lose track of exactly where you are in the progression). In a spot like this, deliberately staying still on the roots and leaning into that half-step motion actually helps everyone in the band hear, “ah, we’re in the C section now.” Walking bass doesn’t always have to be in constant motion — sticking to the roots isn’t a weakness, it’s just one more legitimate approach in your toolkit.

Bar 5

E♭7: A (♯4th), B♭ (5th), C (6th), E♭ (technically the root, but functioning here as a chromatic passing tone leading into the next chord’s root, D)

The first note here starts on A, the ♯4th of E♭7, rather than the root. The reason: this E♭7 is functioning as a tritone substitution for Am7♭5 — without getting into the full theory behind tritone substitutions here, the point is that this bar reuses the same note choices as the Am7♭5 → D7 movement found in bars 5–6 of the A section and bars 1–2 of the B section.

Bar 29 of “Autumn Leaves” sometimes moves as Am7♭5 → D7, and other times as E♭7 → D7, depending on the chart. This version follows a widely used jazz fake book’s version of the progression.

Bars 6–8

D7: D (root), C (♭7th), B♭ (6th), F♯ (3rd)
Gm: G (root), G (root, octave up), F (♭7th), E♭ (♭6th)
Gm: D (5th), C (4th), B♭ (m3rd), B (chromatic passing tone leading back to the top of the form’s Cm7 root, C)

Take your time working through the notation alongside this breakdown to really absorb how the line is constructed.

That covers the full, note-by-note breakdown of this bass line.

Working through a fully notated line like this is a great way to build a feel for what walking bass actually sounds like — and once you’re comfortable with it, getting feedback on building your own original lines from scratch is the natural next step.

Want Personalized Feedback on Your Playing?

This is exactly the kind of thing that’s hard to fix alone — and where having a teacher makes all the difference.

At Line on Bass, I offer an online lesson service where you send me a video of your playing, and I give you specific, detailed feedback — every single day if you want.

Students from around the world are using this to fix exactly these kinds of issues and steadily improve their jazz bass skills.

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