9L 1s

←8L 1s	9L 1s	10L 1s→
↙8L 2s	↓9L 2s	10L 2s↘

Brightest mode	LLLLLLLLLs
Period	2/1
Range for bright generator	1\10 (120¢) to 1\9 (133.3¢)
Range for dark generator	8\9 (1066.7¢) to 9\10 (1080¢)
Parent MOS	1L 8s
Sister MOS	1L 9s
Daughter MOSes	10L 9s, 9L 10s
TAMNAMS name	sinatonic
Equal tunings
Supersoft (L:s = 4:3)	4\39 (123.1¢)
Soft (L:s = 3:2)	3\29 (124.1¢)
Semisoft (L:s = 5:3)	5\48 (125¢)
Basic (L:s = 2:1)	2\19 (126.3¢)
Semihard (L:s = 5:2)	5\47 (127.7¢)
Hard (L:s = 3:1)	3\28 (128.6¢)
Superhard (L:s = 4:1)	4\37 (129.7¢)

9L 1s is a MOS pattern generated by a two-third tone or small "trienthird" of 1/10edo (120 cents) to 1/9 (133.333). It appears as the "diatonic" scale in temperaments such as Negri and Twothirdtonic.

Names

The TAMNAMS system calls this scale pattern sinatonic after sinaic, a proposed interval category name for 14/13-like intervals that generate the scale. Graham Breed's MOS naming calls this the "Grumpy" decatonic scale.

Scale tree

1/10					120
				5/49	122.449
			4/39		123.077
				7/68	123.529
		3/29			124.138
					124.525
				8/77	124.675
					124.766
			5/48		125
					125.296
				7/67	125.373
	2/19				126.316
				7/66	127.273
			5/47		127.66
					127.905
				8/75	128
					128.097
		3/28			128.571
					128.779
				7/65	129.231
			4/37		129.73
				5/46	130.435
1/9					133.333