This guitar lesson is about a harmonic concept mapped out and developped by jazz musician Barry harris that can be found in the book "The Barry Harris Harmonic Method For Guitar" by Alan Kingstone.
This blog article details a little bit more in depth about what is the major 6 diminished scale and how to harmonize it with major 6 and diminished 7 chords.
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Lesson By George Dafnos
This video lesson focuses on a jazz concept created by Barry Harris called "The Chromatic Scale", which is to connect whole steps and half steps with chromaticisms. You will learn how to play the chromatic scale ascending and descending and also hear the related thirds, triads and seventh chords. This technique will be discussed more in details in a future blog article, meanwhile you can also watch Nathan Borton's video to learn more about the construction of this scale.