Watch the Mixolydian Chromatics online guitar lesson by Robbie Calvo from 25 Blues Turnarounds
Blues Turnaround 24 utilizes the Mixolydian mode with added chromatic tones. As an FY, I could also call the E9 arpeggio turnarounds we learnt as Mixolydian in nature, too. This line is a really nice one with lots of low end energy. The chromatic tones used are the C note descending and the A# ascending. Other than that, the notes are all coming directly from the A major scale (E Mixolydian). Of course, the chords are purely blues harmony and come from there respective keys.