A major scale has seven modes, each mode has a Greek name, for example
CDEFGABC = Ionian mode
DEFGABCD = Dorian mode
EFGABCDE = Phrygian mode
FGABCDEF = Lydian mode
GABCDEFG = Mixolydian mode
ABCDEFGA = Aeolian mode
BCDEFGAB = Locrian mode
See also Accent Structure and Time Signature.
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