A minor seventh chord is composed using a root/1st, minor 3rd, perfect 5th and minor 7th (or R/1-♭3-5-♭7) intervals played simultaneously. Generally written as Cmi7, CMI7 or C–7, it is good practice to simply use an uppercase C with lowercase letters mi followed by a super scripted 7 to represent it in writing (ie: Cmi7).
The minor seventh chord occurs naturally in the harmonized major scale (tetrads) on the II, III and VI.
Minor seventh chord profile
|Intervals||root/1st, minor 3rd, perfect 5th, minor 7th or R/1-♭3-5-♭7|
|Stability||Consonant, stable, resolved|
|Common names (examples in C)||Cmi7, Cmin7, CMIN7, CMI7, C−7|
Minor seventh chord table
|Chord name||Root||Minor third||Perfect fifth||Minor seventh|
|D♭mi7||D♭||F♭ (E)||A♭||C♭ (B)|
|G♭mi7||G♭||B (A)||D♭||F♭ (E)|
|C Minor seventh chord voicing #2|