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 {{Infobox Chord|20:25:30:36|Name = Major-minor seventh}}
-The '''major-minor seventh chord''' is a [[tetrad]] in [[5-limit]] harmony, tuned 20:25:30:36 (1⁄1–5⁄4–3⁄2–9⁄5) and 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.
+'''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]].