Major seventh chord: Difference between revisions
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In the [[3-limit]]: | In the [[3-limit]]: | ||
* [[128:162:192:243]] spans five octave-reduced fifths. | * [[128:162:192:243]] spans five octave-reduced fifths, and may be considered a 3-limit approximation of 8:10:12:15. | ||
In the [[5-limit]]: | In the [[5-limit]]: | ||
Revision as of 02:48, 14 August 2024
A major seventh chord is a tetrad comprising a root, major third, perfect fifth, and major seventh.
JI Tunings
In the 3-limit:
- 128:162:192:243 spans five octave-reduced fifths, and may be considered a 3-limit approximation of 8:10:12:15.
In the 5-limit:
- 8:10:12:15 is found on on the I (1⁄1) and IV (4⁄3) of Ptolemy's intense diatonic scale (Zarlino), perhaps the most common 5-limit diatonic.