I'm playing the complete mode ascending over each chord.
So:
I - C Ionian over Cmaj7
ii - D Dorian over Dm7
iii - E Phrygian over Em7
IV - F Lydian over Fmaj7
V7 - G Mixolydian over G7
vi - A Aeolian over Am7
vii° - B Locrian over Bm7b5
You can play the modes descending too. And yes it's a great exercise.
Last edited: Oct 12, 2019