Depiction of the Blues Scale
by ArtByAdam
The blues scale, particularly associated with Robert Johnson and other blues musicians, is a modification of the minor pentatonic scale with the addition of a flattened fifth, often referred to as the "blue note." This note adds a distinct dissonance or "bluesy" feel to the scale.
Intervals of the Blues Scale
In the context of a minor blues scale, the intervals are as follows:
1. Root to Flat 3rd: Minor 3rd (one and a half steps)
2. Flat 3rd to 4th: Major 2nd (whole step)
3. 4th to Flat 5th (Blue Note): Minor 2nd (half step)
4. Flat 5th to 5th: Minor 2nd (half step)
5. 5th to Flat 7th: Major 2nd (whole step)
6. Flat 7th to Octave (Root): Minor 3rd (one and a half steps)
In the Key of C
For example, in the key of C, the notes of the C blues scale would be:
C (root), Eb (flat 3rd), F (4th), Gb (flat 5th/blue note), G (5th), Bb (flat 7th), C (octave/root).
Characteristic Sound
The addition of the blue note (flat 5th) to the minor pentatonic scale is what gives the blues scale its characteristic sound, full of emotional depth and expressiveness, often used to convey the struggles and emotional intensity inherent in blues music. Robert Johnson's mastery of this scale, along with his unique playing style, contributed significantly to his legendary status in blues music.
