A minor ninth chord is composed using a root/1st, minor 3rd, perfect 5th, minor 7th and major 9th (or R/1-♭3-5-♭7-9) intervals played simultaneously. Generally written as Cmi9 or Cmi7(add9), it is good practice to simply use an uppercase C, then the lowercase letters mi followed by a super scripted 9 to represent it in writing (ie: Cmi9).
Minor ninth chord profile
| Intervals | root/1st, minor 3rd, perfect 5th, minor 7th, major 9th or R/1-♭3-5-♭7-9 |
|---|---|
| Stability | Consonant, resolved |
| Grouping class | Pentad |
| Common names (examples in C) | Cmi9, Cmi7(add9), C−9 |
Chord shapes/voicings
Audio sample(s)
| D Minor ninth chord voicing #2 |
|---|




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