The commonly widespread emphasis on pentatonic formations arrived largely from West Africa, While the diatonic (and later a lot more chromatic) melodic traces of jazz grew from late 19th- and early 20th-century European antecedents. It went into decrease while in the late sixties with the 1970s because of the https://classicalmusic78900.blogs100.com/33205481/the-2-minute-rule-for-jazz