Scale Comparison
Pick two scales and a root note to see exactly which intervals they share and where they diverge.
All 12 notes — from A
Scale A
A Blues
R b3 4 b5 5 b7
Pentatonic minor with a b5 'blue note'. Essential for blues.
Open on fretboard →Scale B
A Pentatonic Minor
R b3 4 5 b7
The most popular scale for rock and blues guitar solos.
Open on fretboard →Interval differences
Only in Blues (1 note)
Only in Pentatonic Minor (0 notes)
All notes shared with the other scale
Blues vs Pentatonic Minor: What changes?
The Blues Scale is the Minor Pentatonic with a single added note, the ♭5, known as the 'blue note'.
Mood difference
The minor pentatonic is versatile and clean. The blues scale has more grit and chromatic tension, the ♭5 creates a clash that wants urgently to move, and that tension-resolution is the emotional heart of blues.
Harmonic function
The ♭5 (tritone from the root) sits exactly between the 4th and 5th. It is an inherently unstable interval that resolves powerfully upward to the 5th or downward to the 4th. Blues guitarists use it as a chromatic passing tone, landing on it and sliding or bending to resolution is one of the most recognisable sounds in all of guitar music.