4:5:6:9

Chord information

Harmonics	4:5:6:9
Subharmonics	1/(45:36:30:20)
Intervals from root	1/1 – 5/4 – 3/2 – 9/4
Cents from root	0¢ 386¢ 702¢ 1404¢
Step intervals	5/4, 6/5, 3/2
Step cents	386¢, 316¢, 702¢
Color name	yo add-9 or y,9
Prime limit	5
Genus	32 ⋅ 5 (45)
Intervallic odd limit	9
Otonal odd limit	9
Utonal odd limit	45
Consistent edos (d≥2)	12edo*, 19edo*, 34edo*, 41edo*, …
* 2≤d<4; ** 4≤d<8; *** 8≤d<16; …

4:5:6:9 is a just chord found on the I (1⁄1), III (5⁄4), V (3⁄2), and IX (9⁄4) of Ptolemy's intense diatonic scale (Zarlino), perhaps the most common 5-limit diatonic.

See also

• 8:10:12:15:18
• 4:5:7:9
• 4:6:7:9

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