Start by scoring out the notes associated with the A Dorian mode and D Mixolydian mode, respectively. Attempt to deliver both scales using the pinky of your fretting hand to access the root note of each structure at fret five of the appropriate string. A Dorian can be produced using the formula Tone, Semitone, Tone, Tone, Tone, Semitone, Tone, and D Mixolydian via Tone, Tone, Semitone, Tone, Tone, Semitone, Tone. Once you’ve established the diatonic pitches of both scales, try creating a number of different motifs to help you transcend between the two coinciding structures. As you move from one chord to the next, always be sensitive to the notes that could prove complementary to your direction of travel. Voice leading is the key.…