Explanation
The 5|3 mode of the Lambda MOS scale is written with 9 naturals CDEFGHJAB. Two modules of accidentals are used, #/b to raise and lower by one chroma (L–s), and ^/v to raise and lower by one EDTstep. Following the TAMNAMS convention for non-diatonic mosses, an interval that is k steps of lambda wide is referred to as a "k-mosstep" (e.g. a unison is a 0-mosstep and a tritave is a 9-mosstep). With the exception of the interval classes of ~7/3 and ~9/7 (the generators of the Lambda scale), large intervals use the "major" quality and small intervals use the "minor" quality. Additionally, "mid" is used for intervals halfway between major and minor, perfect and diminished, or perfect and augmented. "Up"/"down" can be prefixed to a quality to denote raising or lowering by 1 EDT-step.
Examples
9edt (L:s = 1:1)
| 0
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
| C
|
D
|
E
|
F
|
G
|
H
|
J
|
A
|
B
|
C
|
| P0ms
|
P1ms
|
P2ms
|
P3ms
|
P4ms
|
P5ms
|
P6ms
|
P7ms
|
P8ms
|
P9ms
|
13edt (L:s = 2:1)
| 0
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
| C
|
C#, Db
|
D
|
E
|
F
|
F#, Gb
|
G
|
H
|
H#, Jb
|
J
|
A
|
A#, Bb
|
B
|
C
|
| P0ms
|
A0ms, m1ms
|
M1ms
|
P2ms
|
m3ms
|
M3ms, m4ms
|
M4ms
|
m5ms
|
M5ms, m6ms
|
M6ms
|
P7ms
|
A7ms, m8ms
|
M8ms
|
P9ms
|
18edt (L:s = 2:2)
| 0
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
| C
|
^C, vD
|
D
|
^D, vE
|
E
|
^E, vF
|
F
|
^F, vG
|
G
|
^G, vH
|
H
|
^H, vJ
|
J
|
^J, vA
|
A
|
^A, vB
|
B
|
^B, vC
|
C
|
| P0ms
|
^0ms, v1ms
|
P1ms
|
^1ms, v2ms
|
P2ms
|
^2ms, v3ms
|
P3ms
|
^3ms, v4ms
|
P4ms
|
^4ms, v5ms
|
P5ms
|
^5ms, v6ms
|
P6
|
^6ms, v7ms
|
P7
|
^7ms, v8ms
|
P8
|
^8ms, v9ms
|
P9ms
|