Glossary of jazz terms in one place. It’s a list of common jazz terms from the perspective of the jazz piano student and all other musicians:
Alteration: The raising or lowering of a tone by a half-step, from its diatonic value in a chord. In jazz usage, the fifth and ninth may be raised (augmented) or lowered (diminished); the fourth (or eleventh) may be augmented; the thirteenth may be diminished. … continue reading this entry.
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