Pinetone: Difference between revisions

@@ Line 215: / Line 215: @@
 * B 25:30:36:45:54:66:80
 * C 27:33:40:50:60:72:90
+Quartal chords:
+* D-G-C 15:20:27
+* E-A-D 11:15:20
+* F-B-E 24:33:44
+* G-C-F 11:15:20
+* A-D-G 9:12:16
+* B-E-A 15:20:27
+* C-F-B 6:8:11
+D-G-C-F 15:20:27:36
+D-G-C-F-B 30:40:54:72:99
+== Comma pump ==
+We can't use our circle of fifths (Meantone comma pump) or our Porcupine comma pumps here, as both 81/80 and 250/243 are observed. In the ptolemismic tuning we temper out 100/99 which we can can pump with chord progressions such as
+D-F-A-C -> F-A-C-E -> E-G-B-D -> D-F-A-C
+D-F-A -> F-B-E -> (E-G-B) -> G-B-D -> D-F-A