A major ninth chord is composed using a root/1st, major 3rd, perfect 5th, major 7th and major 9th (or R/1-3-5-7-9) intervals played simultaneously. Generally written as CMA9 or Cma7(add9), it is good practice to simply use an uppercase C, then the uppercase letters MA followed by a super scripted 9 to represent it in writing (ie: CMA9).
Major ninth chord profile
| Intervals | root/1st, major 3rd, perfect 5th, major 7th, major 9th or R/1-3-5-7-9 |
|---|---|
| Stability | Consonant, resolved |
| Grouping class | Pentad |
| Common names (examples in C) | CMA9, Cma7(add9), C9 |
Chord shapes/voicings
Audio sample(s)
| C Major ninth chord voicing #4 |
|---|




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