Half-prime subgroup: Difference between revisions

@@ Line 7: / Line 7: @@
 == Harmony ==
-If a [[low-complexity JI]]-based perspective is used, then harmony would be largely established using 2 notes at a time rather than three, with an absence of low-complexity triads that can be practically used. The chord 3:5:7, which is shared with [[Bohlen-Pierce]] and no-twos systems, is available but it is unwieldy to manage in a fifth-repeating system.
+If a [[low-complexity JI]]-based perspective is used, then harmony would be largely established using 2 notes at a time rather than three, with an absence of low-complexity triads that can be practically used. The chord 3:5:7, which is shared with [[Bohlen-Pierce]] and other no-twos systems, is available but it is unwieldy to manage in a fifth-repeating system, spanning more than 2 fifths. It may be considered to use to use [[dyad]]s of [[10/9]], [[27/20]] or [[7/5]], or the 12edo-like minor and major thirds [[25/21]] and [[63/50]]. Note that in a fifth-repeating system, the dyad of 25/21 is equivalent to the minor triad 1-25/21-3/2, the minor seventh chord 1-25/21-3/2-25/14, and so on.
 [[Category:Subgroup]]
 [[Category:Just intonation]]