This Micro Lesson covers a Pop-Rock riff out of the mode of, "D Mixolydian."
This riff centers around two chords from the key of, "G Major." The chords are "D," and "C." These are the 5th and 4th chords from "G Major." However, since the "D" chord acts as if it is the tonal center of this riff, the key of "G Major" operates around a modal concept.
This means our "D Major" chord is the new tonal center and since the mode we use off of the 5th degree of the major scale is called, "Mixolydian," we have a chord progression behaving within this mode.
The riff is a two-part musical idea, where the first part highlights the chords of "D & C." The second part of the riff applies melodic ideas in between these chords and creates a strong link between these changes.
The "D" Mixolydian mode is used for the scale tones around these chord punches. Take the riff under a slow learning curve and have a goal to commit it to memory first. Then, build your speed with a metronome or a drum-machine. Enjoy!
Micro Lesson 161: "D Mixolydian" Pop-Rock Riff