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mΔ9 Chord on Guitar - P4 Tuning

4-Voices on Fretboard in P4 Tuning:

Image of mΔ9 Chord on the Guitar in P4 tuning.


There are over 70 voicings for the mΔ9 chord on guitar and the image above shows only 3 of them. For more voicings see: Fretboard Chord Charts for Guitar in P4 tuning

The mΔ9 chord contains a minor third, perfect fifth, major seventh, and a major ninth.

The intervallic relationships it contains are: minor third, perfect fifth, major seventh, major ninth, major third, minor sixth, major seventh, major third, perfect fifth, minor third.


  • Root
  • Minor Third
  • Perfect Fifth
  • Major Seventh
  • Major Ninth


The mΔ9 chord has a dissonance rating of 122*

*Dissonance is very subjective. So, as a general guideline, this number is mathematically derived by measuring the intervallic dissonance this chord contains. (The higher the number the more dissonant the chord.)

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