Practical Technique

Play Soulful Phrases with the Blues Scale

2025-01-05

What is the Blues Scale?

The blues scale adds the "blue note" (♭5th) to the minor pentatonic, creating a 6-note scale. This single added note creates the distinctive "crying" or "wailing" sound.

It's an extremely expressive scale used in blues, rock, jazz, funk, and many other genres.

Blues Scale Structure

A Blues Scale: A - C - D - E♭ - E - G

Degrees: 1 - ♭3 - 4 - ♭5 - 5 - ♭7

By adding the ♭5th to the minor pentatonic (1-♭3-4-5-♭7), you create the blues scale. This ♭5th is the "blue note" - a crucial tone that creates unique tension and melancholy.

The Magic of the Blue Note

The blue note (♭5th) shows its true value when combined with various techniques:

1. Bending

Quarter-bend from ♭5th to 5th, or bending from 4th to ♭5th, are classic blues guitar techniques. This "in-between" pitch creates vocal-like expression.

2. Hammer-on/Pull-off

Connecting 4th → ♭5th → 5th with hammer-ons and pull-offs creates smooth, expressive phrases. A signature move of B.B. King and Eric Clapton.

3. Slide

Sliding into or out of the blue note adds a "singing" quality to your playing.

Classic Phrase Patterns

Pattern 1: Classic Turnaround

A phrase commonly used in the last 2 bars of a blues progression.

♭7 → 5 → ♭5 → 4 → ♭3 → 1

Pattern 2: B.B. King Box

Singing phrases played in high positions on the 1st and 2nd strings.

1 → ♭3 (bend) → 4 → ♭5 (quarter bend) → 5

Pattern 3: Classic Rock Lick

A powerful phrase commonly used in rock guitar.

1 → ♭3 → 4 → ♭5 → 4 → ♭3 → 1

Application to Major Blues

Though the blues scale is minor-based, it works over major key blues progressions. This "playing minor scale over major chords" creates the distinctive blues sound.

Advanced players freely move between minor pentatonic, major pentatonic, and blues scale to construct more complex and expressive solos.

Practice Tips

  • First, master the minor pentatonic perfectly
  • Learn the blue note location in each position
  • Use the blue note as a "passing tone" (don't hold it long)
  • Copy famous blues guitarists' phrases to learn application
  • Practice with 12-bar blues backing tracks
  • Develop expressive bending and vibrato

Recommended Guitarists to Study

B.B. King

The King of Blues guitar. A textbook for vibrato and bending.

Stevie Ray Vaughan

The powerhouse of Texas blues. Powerful tone and passionate playing.

Eric Clapton

Blues rock master. Clear, singing phrasing.

Gary Moore

The soul of Irish blues. Heart-stirring, crying guitar.

Summary

The blues scale dramatically expands your expression with just one added note. After mastering pentatonic, definitely try the blues scale. Once you can use this scale well, your guitar solos will definitely reach the next level.

Check Blues Scale on Fretboard