Your First Walking Bass Lines: Three Patterns You Can Play Over a 12-Bar Blues

Most beginner bass lines repeat one or two notes per chord. A walking bass line plays one note on every beat, four notes per bar, and the notes move through the chord so the harmony is audible even without a guitar or piano. This is the sound under a lot of jazz and blues, and it is easier to learn than it sounds.

A bass guitarist's fretting hand and plucking fingers on a sunburst four-string bass, close up, in a dimly lit jazz club with warm amber stage light and a blurred upright piano and brick wall behind.

You only need four kinds of note and three patterns. By the end you will have a complete walking chorus over a 12-bar blues in the key of A, written out in tab.

What a walking bass line actually does

A walking line does two jobs at once. It outlines the current chord, and it leads the listener’s ear to the next one. The first job comes from choosing notes that belong to the chord. The second comes from the last note of each bar, which sits close to the root of the chord that follows.

The rhythm is always the same: four even quarter notes per bar, one on each beat. That evenness is the whole feel. Because you never change the rhythm, all your attention goes to which four notes you choose, and the choices below are small enough to memorize.

The four notes you need: root, third, fifth and the approach note

Every chord in this lesson is a dominant seventh chord (A7, D7, E7), and you can build a line from three of its notes plus one note from outside it:

Close-up of a bass fretboard in warm side light with four fret positions marked by small colored stickers: the A on the open string, the C# at fret 4, the E at fret 7 and a single approach note one fret before the next root, each in a different color so the chord tones and the outside note stand apa

Root: the note the chord is named after. For A7 that is A.
Third: two whole steps above the root. For A7 that is C#.
Fifth: the note seven frets above the root on the same string. For A7 that is E.
Approach note: a note one fret above or below the next chord’s root. It does not belong to the current chord, so it works as a short passing note that resolves on the next downbeat.

Here are the notes for the three chords in a blues in A:

Chord Root Third Fifth A7 A C# E D7 D F# A E7 E G# B

If you know your major scales, the third and fifth are simply the first, third and fifth notes of the chord’s major scale. You do not need any further theory to play what follows.

Pattern 1: Root-third-fifth-third, the safest walk

This is the pattern to learn first. You play the root, climb to the third, climb to the fifth, then step back down to the third. The shape ends on a chord tone, so the line stays inside the chord, and the third on beat 4 leaves you one short move from the next root.

If you are new to reading the numbers below, How To Read Bass Guitar Tabs For Beginners covers the layout. The bottom line is your low E string, and each number is a fret.

A7 (root A, third C#, fifth E, third C#):

G|--------------|
D|--------------|
A|--0--4--7--4--|
E|--------------|

D7 (D, F#, A, F#), the same shape on the D string:

G|--------------|
D|--0--4--7--4--|
A|--------------|
E|--------------|

E7 (E, G#, B, G#), which crosses strings:

G|--------------|
D|--------------|
A|--------2-----|
E|--0--4-----4--|

The shape is the same for every chord: root, third, fifth, third. Only the starting note changes. Play each bar slowly and keep every note the same length, so that beat 4 does not get cut short.

Pattern 2: Scale-wise walking to the next chord

The second pattern moves by step instead of by chord tone. You take four consecutive notes of the scale and let the last one land one step away from the next root. This gives a smoother, more melodic line, and it is a good way to practice using the scales you already know.

Going from A7 down to D7, play A, G, F#, E on the low E string. The next bar starts on D, one whole step below that last E. This is the A major scale with the G played natural, because the G belongs to an A7 chord.

G|--------------|
D|--------------|
A|--------------|
E|--5--3--2--0--|

Going up works the same way. From D7 to A7, play D, E, F#, G on the D string and let the next bar start on A:

G|--------------|
D|--0--2--4--5--|
A|--------------|
E|--------------|

If scale shapes still feel unfamiliar, Bass Scales For Absolute Beginners shows the fingerings, and How To Create Bass Lines Using Scales goes further into building lines from them. Use Pattern 2 when a chord lasts a full bar and the next root is a few scale steps away. It is less useful when the next root is only one step away, because there is no room for the walk.

Pattern 3: Chromatic approach into the next root

The third pattern plays root, third and fifth, then uses an approach note on beat 4. The approach note is one fret below the next root (or one fret above it). The tension of that note being just outside the key is resolved the moment you land on the root, and that resolution is what makes the line sound like jazz or blues.

A bassist's fretting hand stretched up the D string, index finger resting on fret 5 and the little finger one fret below, poised to slide into the next note, shot at a low angle against a dark studio wall with a soft rim light.

Going from D7 to A7, play D, F#, A, then G# (one fret below A):

G|--------------|
D|--0--4--7--6--|
A|--------------|
E|--------------|

The next bar begins on A. You can also approach from above: the note one fret above A is A#, which also resolves down to A. Try both and choose by ear.

Two things keep this pattern clean. First, play the approach note at the same length and volume as the others, without rushing it. Second, always follow it with the root it points to. An approach note that is not resolved sounds like a mistake.

Putting it together: a walking chorus over a 12-bar blues

A 12-bar blues is one of the most common chord progressions in popular music, and the one most beginners meet first. If you want more background on how progressions work, Simple Chord Progressions For Bass Players covers the basics. In the key of A, the twelve bars are:

Bars Chord 1 to 4 A7 5 and 6 D7 7 and 8 A7 9 E7 10 D7 11 A7 12 E7

Here is one complete walking chorus using all three patterns. Bars 1 to 3, 5, 7, 9, 10 and 11 use Pattern 1. Bar 4 uses Pattern 2 to walk down into D7. Bars 6 and 8 use Pattern 3 to approach A and E. Bar 12 uses Pattern 3 with an approach from above, so the line lands on A when the chorus starts again.

G|--------------|--------------|--------------|--------------|
D|--------------|--------------|--------------|--------------|
A|--0--4--7--4--|--0--4--7--4--|--0--4--7--4--|--------------|
E|--------------|--------------|--------------|--5--3--2--0--|
   A7             A7             A7             A7 (to D7)

G|--------------|--------------|--------------|--------------|
D|--0--4--7--4--|--0--4--7--6--|--------------|--------------|
A|--------------|--------------|--0--4--7--4--|--0--4--7--6--|
E|--------------|--------------|--------------|--------------|
   D7             D7 (to A)      A7             A7 (to E)

G|--------------|--------------|--------------|--------------|
D|--------------|--0--4--7--4--|--------------|--------------|
A|--------2-----|--------------|--0--4--7--4--|--------2--1--|
E|--0--4-----4--|--------------|--------------|--0--4--------|
   E7             D7             A7             E7 (to A)

Play it through once at a slow tempo, then repeat it. The line has only four kinds of bar, so you will find the changes becoming familiar quickly. Once they do, swap bars between patterns and listen to how each one sounds.

Common beginner mistakes and a slow metronome routine

These are the problems that come up most often when learning walking lines:

A bass guitar leaning on a stool beside a wooden practice desk, with a classic analog pendulum metronome mid-swing and a pencil on a notebook of handwritten bar counts, lit by soft late-afternoon window light in a tidy home practice room.

Rushing the approach note. Beat 4 is easy to squeeze. Give it a full beat.
Uneven volume. If the open A string rings louder than the fretted notes, aim to pluck every note with the same strength.
Losing your place in the form. Count the bars out loud. The 12-bar form only works if you always know which bar you are in.
Jumping around the neck. Stay in one position until the patterns are automatic, then explore.
Starting too fast. A wrong note played quickly is harder to fix than the same note played slowly.

A short daily routine will build the habit:

Play each pattern on one chord, four times in a row, with a metronome at 60 BPM. How to Use a Metronome to Build Rock Solid Bass Timing explains how to set it up if you have not used one for bass before.
Play the full 12-bar chorus twice without stopping.
When you can play it twice with no mistakes, raise the tempo by 5 BPM.
If you make a mistake, go back down 5 BPM and play it twice cleanly before moving up again.

A looping backing track is useful here, because you can hear the changes while you play. Bass Skills Studio is a free practice app built for this kind of work.

Try these patterns in Bass Skills Studio, the free practice app, and loop the 12-bar blues at a slow tempo until the changes feel automatic.