4L 15s

↖ 3L 14s	↑ 4L 14s	5L 14s ↗
← 3L 15s	4L 15s	5L 15s →
↙ 3L 16s	↓ 4L 16s	5L 16s ↘

┌╥┬┬┬╥┬┬┬┬╥┬┬┬┬╥┬┬┬┬┐ │║│││║││││║││││║│││││ │││││││││││││││││││││ └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
Scale structure
Step pattern	LsssLssssLssssLssss ssssLssssLssssLsssL
Equave	2/1 (1200.0 ¢)
Period	2/1 (1200.0 ¢)
Generator size
Bright	14\19 to 3\4 (884.2 ¢ to 900.0 ¢)
Dark	1\4 to 5\19 (300.0 ¢ to 315.8 ¢)
TAMNAMS information
Related to	4L 3s (smitonic)
With tunings	4:1 to 1:0 (ultrahard)
Related MOS scales
Parent	4L 11s
Sister	15L 4s
Daughters	19L 4s, 4L 19s
Neutralized	8L 11s
2-Flought	23L 15s, 4L 34s
Equal tunings
Equalized (L:s = 1:1)	14\19 (884.2 ¢)
Supersoft (L:s = 4:3)	45\61 (885.2 ¢)
Soft (L:s = 3:2)	31\42 (885.7 ¢)
Semisoft (L:s = 5:3)	48\65 (886.2 ¢)
Basic (L:s = 2:1)	17\23 (887.0 ¢)
Semihard (L:s = 5:2)	37\50 (888.0 ¢)
Hard (L:s = 3:1)	20\27 (888.9 ¢)
Superhard (L:s = 4:1)	23\31 (890.3 ¢)
Collapsed (L:s = 1:0)	3\4 (900.0 ¢)

4L 15s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 4 large steps and 15 small steps, repeating every octave. 4L 15s is a great-grandchild scale of 4L 3s, expanding it by 12 tones. Generators that produce this scale range from 884.2 ¢ to 900 ¢, or from 300 ¢ to 315.8 ¢. Around -2g = 7/5, myna/starling appears^{[clarification needed]}.

5/19							315.7895
						31/118	315.254
					26/99		315.1515
				21/80			315
			16/61				314.754
				27/103			314.563
		11/42					314.2857
							100*pi
						50/191	314.136
							314.096
					39/149		314.094
				28/107			314,019
							313.972
			17/65				313.769
							313.681
				23/88			313.5455
	6/23						313.0435
				19/73			312.329
			13/50				312
							311.778
				20/77			311.688
							311.595
		7/27					311.111
							310.883
				15/58			310.345
			8/31				309.677
				9/35			308.286
					10/39		307.692
						11/43	306.977
1/4							300