"I've sworn by the Tonality Reference Guide as a student, player, writer, and teacher of music. It makes all the complexities of music clear and simple. A must-have for any musician!" - Parker Goubert (Check out Parker’s website, strumbystrum.com, showing a cool way to play and learn songs:)

“The way you taught me theory (at Regis University) made my harmony classes at Berklee College of Music a breeze.” - Mario Quadracci

“I'm a self-taught guitarist, and I play what I hear. I read through the TONALITY REFERENCE GUIDE and was amazed at how much more of a grasp I had on music after going through it".......“it made it really easy for me to understand what I was doing...and why!!" - Matt Hays

“I never studied music in high school or college, nor do I read music, but Scott’s TONALITY REFERENCE GUIDE makes understanding music theory simple and easy.” -John Guttman