Excellent video, thank you. This is a fantastic exercise that I have not seen explained before. This is definitely a major part of Django's improvisation. Django did not go to music school and did not read music, but it is obvious he learned and understood the advanced musical principles you are demonstrating from trained musicians like Stephane Grappelli, who graduated from the Conservatoire de Paris. (PS---- did you know that Stephane Grappelli once played on a Pink Floyd album? What a great musician he was, and how fortunate for musical history that he met Django)
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