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 ¢. This scale is associated with myna temperament (pronounced /'maɪnə/), where stacking two bright generators and octave-reducing produces 7/5 (~582¢).