Learn how to apply pitch axis theory and modal harmony on the guitar. A step by step video tutorial that will teach you everything you need to know to play the guitar under one droning pitch with more than one scale type. Andrew Wasson of CreativeGuitarStudio explains the principles of pitch axis. He shows us how to stay under one pitch and use a series of other chords that will influence harmony in one way or another. In this lesson, Andrew will show you how to play a progression using a D pitch droning in the bass while playing different scales.