Chord Progressions: Theory and Practice: Everything You Need to Create and Use Chords in Every Key - Kindle edition by Fox, Dan, Weissman, Dick. Arts & Photography Kindle eBooks @ Amazon.com.
A clip from Duane's Chord Progressions course - YouTube
Duane Shinn - EzineArticles.com Expert Author
Whats the best course by Duane Shinn for me to start with? - YouTube