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Music Theory Numbering System

12     1     7    5     2     221-2221     EON

  • 12 = 12 tones in our musical system.
  • 1 = 1 half step apart.
  • 7 = 7 natural tones = A, B, C, D, E, F, and G.
  • 5 = 5 sharps/flats.
  • 2 = 2 naturally occuring half steps. 2 more naturals than sharps/flats.
  • 221-2221 = Major scale pattern. A way to dial up the tones of a Major key.
  • EON = Chords are built every other note, from every tone in the key.

Next is 12 1 7 5 2

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