20:25:30:36: Difference between revisions
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m Bcmills moved page Major-minor seventh chord to 20:25:30:36 over redirect: reserving "major-minor seventh chord" for a more general concept |
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{{Infobox Chord|20:25:30:36|Name = Major-minor seventh}} | {{Infobox Chord|20:25:30:36|Name = Major-minor seventh}} | ||
'''20:25:30:36''' (1⁄1–5⁄4–3⁄2–9⁄5), a '''major-minor seventh chord''', is a [[tetrad]] in [[5-limit]] harmony, sometimes considered a form of [[dominant seventh chord]]. It combines a [[5/4]] major third with the [[consonant]] [[9/5]] seventh that would be found in a [[Ptolemaic minor seventh chord]] on the same root, creating a [[36/25]] tritone between the two. | |||
The major-minor seventh chord is found rooted at 1⁄1 (I) and 4⁄3 (IV) in the [[duodene]]. | The major-minor seventh chord is found rooted at 1⁄1 (I) and 4⁄3 (IV) in the [[duodene]]. | ||
Revision as of 14:18, 12 August 2024
| Chord information |
20:25:30:36 (1⁄1–5⁄4–3⁄2–9⁄5), a major-minor seventh chord, is a tetrad in 5-limit harmony, sometimes considered a form of dominant seventh chord. It combines a 5/4 major third with the consonant 9/5 seventh that would be found in a Ptolemaic minor seventh chord on the same root, creating a 36/25 tritone between the two.
The major-minor seventh chord is found rooted at 1⁄1 (I) and 4⁄3 (IV) in the duodene.
In septimal meantone, the 36/25 tritone is equated with the more consonant interval 10/7, and the major-minor seventh chord becomes an essentially tempered chord in the 9-odd-limit.