Minor seventh chord

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A minor seventh chord is a tetrad comprising a root, a minor third, a perfect fifth, and a minor seventh.

In just intonation

In the 7-limit:

  • 12:14:18:21, the subminor seventh chord, is a 9-odd-limit chord that tunes both the third and the seventh flatter than the 5-limit minor.

In the 5-limit:

  • 10:12:15:18 is found on the iii (54) and vi (53) of Ptolemy's intense diatonic scale (Zarlino), perhaps the most common 5-limit diatonic.
  • 27:32:40:48 is found on the ii (98) of Ptolemy's intense diatonic scale.

In the 3-limit:

  • 54:64:81:96 is found on the ii (98), iii (8164), and vi (2716) of the Pythagorean diatonic scale, and may be considered a 3-limit approximation of both 10:12:15:18 and 27:32:40:48.