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	<id>https://en.xen.wiki/index.php?action=history&amp;feed=atom&amp;title=64%2F27</id>
	<title>64/27 - Revision history</title>
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	<updated>2026-06-27T09:03:15Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>https://en.xen.wiki/index.php?title=64/27&amp;diff=214095&amp;oldid=prev</id>
		<title>Overthink: Created page with &quot;{{Infobox Interval | Name = Pythagorean minor tenth | Color name = w10, wa 10th }}  &#039;&#039;&#039;64/27&#039;&#039;&#039; is the &#039;&#039;&#039;Pythagorean minor tenth&#039;&#039;&#039;.  It functions as an octave above a pythagorean minor third in just intonation.  == Trivia ==  This interval is a common ultrawide aspect ratio, often marketed as 21:9, which simplifies to 7:3. 64/27 differs from 21/9 by 64/63, the septimal comma.  == See also == * 32/27 – its octave reduction * 81/64 –...&quot;</title>
		<link rel="alternate" type="text/html" href="https://en.xen.wiki/index.php?title=64/27&amp;diff=214095&amp;oldid=prev"/>
		<updated>2025-10-22T22:09:48Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{Infobox Interval | Name = Pythagorean minor tenth | Color name = w10, wa 10th }}  &amp;#039;&amp;#039;&amp;#039;64/27&amp;#039;&amp;#039;&amp;#039; is the &amp;#039;&amp;#039;&amp;#039;Pythagorean minor tenth&amp;#039;&amp;#039;&amp;#039;.  It functions as an octave above a &lt;a href=&quot;/w/32/27&quot; title=&quot;32/27&quot;&gt;pythagorean minor third&lt;/a&gt; in just intonation.  == Trivia ==  This interval is a common ultrawide aspect ratio, often marketed as 21:9, which simplifies to &lt;a href=&quot;/w/7/3&quot; title=&quot;7/3&quot;&gt;7:3&lt;/a&gt;. 64/27 differs from 21/9 by &lt;a href=&quot;/w/64/63&quot; title=&quot;64/63&quot;&gt;64/63&lt;/a&gt;, the septimal comma.  == See also == * &lt;a href=&quot;/w/32/27&quot; title=&quot;32/27&quot;&gt;32/27&lt;/a&gt; – its &lt;a href=&quot;/w/Octave_reduction&quot; title=&quot;Octave reduction&quot;&gt;octave reduction&lt;/a&gt; * &lt;a href=&quot;/w/81/64&quot; title=&quot;81/64&quot;&gt;81/64&lt;/a&gt; –...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{Infobox Interval&lt;br /&gt;
| Name = Pythagorean minor tenth&lt;br /&gt;
| Color name = w10, wa 10th&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;64/27&amp;#039;&amp;#039;&amp;#039; is the &amp;#039;&amp;#039;&amp;#039;Pythagorean minor tenth&amp;#039;&amp;#039;&amp;#039;.  It functions as an octave above a [[32/27|pythagorean minor third]] in just intonation.&lt;br /&gt;
&lt;br /&gt;
== Trivia ==&lt;br /&gt;
&lt;br /&gt;
This interval is a common ultrawide aspect ratio, often marketed as 21:9, which simplifies to [[7/3|7:3]]. 64/27 differs from 21/9 by [[64/63]], the septimal comma.&lt;br /&gt;
&lt;br /&gt;
== See also ==&lt;br /&gt;
* [[32/27]] – its [[octave reduction]]&lt;br /&gt;
* [[81/64]] – its [[tritave complement]]&lt;br /&gt;
* [[Gallery of just intervals]]&lt;br /&gt;
* [[Pythagorean tuning]]&lt;br /&gt;
&lt;br /&gt;
[[Category:Tenth]]&lt;br /&gt;
[[Category:Minor tenth]]&lt;/div&gt;</summary>
		<author><name>Overthink</name></author>
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