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→Pitch Axis Theory
|Modes#Why/When to Use Modes|Usage
|Modes#Pitch Axis Theory|Pitch Axis Theory
'''Pitch Axis''' is a method of composition that tends to retain a common root note across a chord progression, simply changing the quality and embellishments of the chord. A sample sequence could be A, Am, A{{dim}}, A+. No single scale contains all these chords. Instead, one could use the A Ionian, Lydian, or Mixolydian over A. Then A Dorian, Phrygian, or Aeolian over Am. Then A Lydian or Locrian over A{{dim}}. And finally A Harmonic Major, Augmented, or Whole Tone over A+ (those are technically not modes based on the major scale, but still scales with a tonic note of A).