Download Pure Piano and Pure Upright: Pure Piano: Pure Upright: and take a look at my walkthrough of the new "Sympathetic Resonance" feature: . My video on the "Circle of 5ths" chord progression:. The best 5th is at the heart of how harmony works and these 2 chord progressions get their gratifying sound from this most consonant of periods! And, an extra special thanks goes to Peter Keller, Douglas Lind, Vidad Flowers, Ivan Pang,…