2L 1s

←1L 1s	2L 1s	3L 1s→
↙1L 2s	↓2L 2s	3L 2s↘

Brightest mode	LLs
Period	2/1
Range for bright generator	1\3 (400¢) to 1\2 (600¢)
Range for dark generator	1\2 (600¢) to 2\3 (800¢)
Parent MOS	1L 1s
Sister MOS	1L 2s
Daughter MOSes	3L 2s, 2L 3s
Equal tunings
Supersoft (L:s = 4:3)	4\11 (436.4¢)
Soft (L:s = 3:2)	3\8 (450¢)
Semisoft (L:s = 5:3)	5\13 (461.5¢)
Basic (L:s = 2:1)	2\5 (480¢)
Semihard (L:s = 5:2)	5\12 (500¢)
Hard (L:s = 3:1)	3\7 (514.3¢)
Superhard (L:s = 4:1)	4\9 (533.3¢)

2L 1s is a moment of symmetry scale consisting of 2 large steps and 1 small step, repeating every octave. This scale is made using a generator ranging from 400¢ to 600¢, or from 600¢ to 800¢.

2L 1s is one of two halves in the tree of strict MOSes, the other being 1L 2s. 2L 1s is the parent MOS of the pentic scale 2L 3s, which is itself the parent of the diatonic and antidiatonic scales, as well as the antipentic scale 3L 2s, which is itself the parent of the oneirotonic and checkertonic scales.

Names

TAMNAMS uses the name trial.

Modes

• 2|0 LLs
• 1|1 LsL
• 0|2 sLL

Scale tree

Bright generator (in steps)	Cents	L	s	L/s	Comments
1\3	400	1	1	1	Equalized 2L 1s Equalized 2L 1s
6\17	423.529	6	5	1.2
5\14	428.571	5	4	1.25
9\25	432	9	7	1.286
4\11	436.364	4	3	1.333	Supersoft 2L 1s
11\30	440	11	8	1.375
7\19	442.105	7	5	1.4
10\27	444.444	10	7	1.429
3\8	450	3	2	1.5	Soft 2L 1s
11\29	455.172	11	7	1.571
8\21	457.143	8	5	1.6
13\34	458.824	13	8	1.625
5\13	461.538	5	3	1.667	Semisoft 2L 1s
12\31	464.516	12	7	1.714
7\18	466.667	7	4	1.75
9\23	469.565	9	5	1.8
2\5	480	2	1	2	Basic 2L 1s Basic 2L 1s
9\22	490.909	9	4	2.25
7\17	494.118	7	3	2.333
12\29	496.552	12	5	2.4
5\12	500	5	2	2.5	Semihard 2L 1s
13\31	503.226	13	5	2.6
8\19	505.263	8	3	2.667
11\26	507.692	11	4	2.75
3\7	514.286	3	1	3	Hard 2L 1s
10\23	521.739	10	3	3.333
7\16	525	7	2	3.5
11\25	528	11	3	3.667
4\9	533.333	4	1	4	Superhard 2L 1s
9\20	540	9	2	4.5
5\11	545.455	5	1	5
6\13	553.846	6	1	6
1\2	600	1	0	→ ∞	Collapsed 2L 1s Collapsed 2L 1s