Blues Guitar

Master the language of blues: the 12-bar form, blues scale, bending, vibrato, and phrasing techniques that define the genre.

Blues is the foundation: Rock, jazz, R&B, and soul all evolved from blues. Learning blues guitar isn't just about one genre—it's about understanding the DNA of modern music.

The 12-Bar Blues Form

Understanding 12-Bar Blues

The most important chord progression in popular music

The 12-bar blues is a repeating 12-measure chord progression. It's the backbone of thousands of songs and the foundation for blues improvisation.

Standard 12-Bar Blues in A

| A7 | A7 | A7 | A7 | (4 bars of I)

| D7 | D7 | A7 | A7 | (2 bars of IV, 2 bars of I)

| E7 | D7 | A7 | E7 | (V, IV, I, V turnaround)

Each chord is typically played as a dominant 7th chord (A7, D7, E7). This creates the characteristic "tension" sound of blues.

Quick-Change Blues

A common variation

| A7 | D7 | A7 | A7 | (Quick change to IV in bar 2)

| D7 | D7 | A7 | A7 |

| E7 | D7 | A7 | E7 |

The "quick change" moves to the IV chord in bar 2, creating more harmonic movement early in the progression.

The Blues Scale

Blues Scale Formula

Minor pentatonic + the "blue note"

Scale Degrees: 1 - ♭3 - 4 - ♭5 - 5 - ♭7

Example in A blues scale: A - C - D - E♭ - E - G

The blues scale is the minor pentatonic scale with an added ♭5 (the "blue note"). This note creates the characteristic dissonance and tension that defines blues sound.

The Blue Note: The ♭5 is typically used as a passing tone or bent into the 5th. It's the "wrong" note that sounds so right in blues context.

A Blues Scale - Position 1

e|---5---8----------|
B|---5---6---8------|
G|---5---6---7------|
D|---5---6---7------|
A|---5---6---7------|
E|---5---8----------|

The ♭5 (blue note E♭) is on fret 6

Notice how the blue note (fret 6) sits between the 4th and 5th scale degrees. This creates the characteristic "bluesy" sound when bent or used as a passing tone.

Bending Techniques

What is String Bending?

String bending is pushing or pulling a string sideways to raise its pitch. It's one of the most expressive techniques in blues and rock guitar, allowing you to add emotion and "vocal" quality to your playing.

Half-step bend: Raise pitch by one fret (one semitone)

Whole-step bend: Raise pitch by two frets (one whole tone)

Bend and release: Bend up, then return to original pitch

Pre-bend: Bend the string before picking, then release

Essential Bending Exercise

Build accuracy and strength

e|---7b9---7b9---7b9---7b9---|

"b9" means bend the 7th fret up to match the pitch of the 9th fret
Use your ring finger, supported by middle and index fingers

Technique: Place ring finger on fret 7, supported by middle and index fingers behind it

Motion: Push string upward (toward ceiling) using wrist rotation, not just finger strength

Accuracy check: Play fret 9 first to hear target pitch, then bend fret 7 to match it

Classic Blues Bending Licks

Lick 1: The "Crying" Bend

e|---5---8b10r8---5---|

Bend 8th fret up a whole step, then release back down

Lick 2: Double-Stop Bend

B|---8b10-------------|
G|---7----------------|

Bend the B string while holding the G string

Lick 3: Blue Note Bend

G|---6b7---7---5---|

Bend the blue note (♭5) up to the 5th

Vibrato

What is Vibrato?

Vibrato is a rhythmic variation in pitch created by rapidly bending and releasing a note. It's what gives sustained notes life, emotion, and personality. Every great blues guitarist has a distinctive vibrato.

Narrow vibrato: Small, quick oscillations (B.B. King style)

Wide vibrato: Larger pitch variations (Eric Clapton, David Gilmour)

Speed: Can be slow and vocal-like, or fast and intense

Vibrato Exercise

Develop control and consistency

e|---8~~~~---8~~~~---8~~~~---|

Hold fret 8, apply vibrato by rotating wrist back and forth
The "~" symbol indicates vibrato

Technique: Rotate wrist back and forth, not just wiggling finger

Rhythm: Practice vibrato in time with a metronome (quarter notes, eighth notes)

Control: Start with slow, wide vibrato, then practice fast, narrow vibrato

Blues Phrasing

Call and Response

The conversational nature of blues

Blues phrasing is based on call and response—play a phrase (call), leave space, then play an answering phrase (response). This creates a conversational, vocal quality.

e|---5---8---7---5------|----------|---5---8---10---8---5---|----------|
                  CALL              SPACE         RESPONSE            SPACE

Key principle: Space is as important as notes. Don't play constantly.

Rhythm: Phrases often start on upbeats or after the beat (syncopation)

Repetition: Repeat phrases with slight variations—this is how blues "tells a story"

Targeting Chord Tones

Making your solos fit the harmony

While the blues scale works over the entire 12-bar progression, emphasizing chord tones (root, 3rd, 5th, 7th) of each chord creates stronger, more melodic phrases.

Over A7: Emphasize A, C#, E, G (but you're playing A blues scale with C natural—this creates tension!)

Over D7: Emphasize D, F#, A, C

Over E7: Emphasize E, G#, B, D

Advanced players mix major and minor 3rds for a sophisticated blues sound.

Blues Shuffle Rhythm

The Shuffle Feel

Swing eighth notes define blues rhythm

Blues shuffle uses "swing" or "triplet" feel—eighth notes are played unevenly, with the first note longer than the second. This creates the characteristic "bouncy" blues groove.

Straight eighths: 1-and-2-and-3-and-4-and (even spacing)

Shuffle/swing eighths: 1-and-uh-2-and-uh-3-and-uh-4-and-uh (triplet feel, skip middle note)

Think "long-short, long-short" or "DU-da DU-da"

Basic Shuffle Pattern in A

e|------------------------|
B|------------------------|
G|------------------------|
D|---7---7---9---7--------|
A|---7---7---9---7--------|
E|---5---5---7---5--------|
    A5  A5  A6  A5

Play with shuffle feel (swing eighths)

This classic pattern alternates between the root (A) and the 6th (F#), creating movement within the chord. Play with a relaxed, swinging feel.