Most music of the Western world uses chromatic scales. Jazz music is western music. Jazz uses chromatic notes as something characteristic of the style. Chromaticism is very common in the improvisations of jazz masters. In jazz theory these scales are sometimes called Bebop scales.
Jazz theory emerged decades after jazz music. “Bebop scales” existed long before they were called “bebop scales.” Theory is the result of practice, not the other way around.
The Major Bebop Scale adds a chromaticism between the fifth and sixth notes of a Major Scale.
D major Bop scale
A7 Bop scale
The Dominant Bebop Scale adds a chromaticism between the seventh and eight notes of a Dominant Scale.
Study Chapter 1
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