In blues soloing part 2 we looked at alternative pentatonic scales to play over unaltered dominant 7 chords. This time we take a look at the mixolydian mode, the fifth mode of the major scale. Here’s our basic G blues progression again.
Even though we’re in the key of G, the G chord has been converted from a major 7 to a dominant 7 type chord. The major scale that this chord is derived from is C major. If we were to play G to G in C major we would get the mixolydian mode G A B C D E F G. This scale will work well with G7, G9, G13 and G7sus4.
We can also use this scale for the IV and V chords in the progression if they are unaltered. C mixolydian is derived from F major C D E F G A Bb, and D mixolydian is derived from the G major scale D E F# G A B C.