Oneirotonic

Oneirotonic is the 5L3s MOS pattern LLsLLsLs. Its generator ranges from equalized 3\8 (450c) to collapsed 2\5 (480c) and the generator's basic tuning (L/s = 2/1) is 5\13 (461.5c). It is notable for being a compressed diatonic with one extra small step.

The basic idea of oneirotonic is sharpening the fifth beyond 5edo: the fifth becomes so sharp that two of them make a subminor/flat minor third and one more note is required to form a MOS.

Notation

This article uses KISS notation, where the Celephaisian mode is 123456781. Chroma up is denoted #, chroma down as b. Alternatively, there is ground's oneirotonic notation, which preserves the diatonic order of letter names when stacking fourths (with one extra nominal): BEADGCFX, again with the Celephaisian mode as ACBDFEGXA. Note that C and B are swapped, and F and E are also swapped. Alternate generator chains are YBEADGCF and HEADGCFB from German notation.

Structural theory

In the all-natural Celephaisian mode, the generators are arranged in the order 3-6-1-4-7-2-5-8.

Modes

The mode names were originally given by Cryptic Ruse, but they have disavowed them since.

Mode name	Gens up	Pattern	1-step	2-step	3-step	4-step	5-step	6-step	7-step
Sarnathian	0	sLsLLsLL	m	m	d	m	P	m	m
Hlanithian	1	sLLsLsLL	m	m	P	m	P	m	m
Kadathian	2	sLLsLLsL	m	m	P	m	P	M	m
Mnarian	3	LsLsLLsL	M	m	P	m	P	M	m
Ultharian	4	LsLLsLsL	M	m	P	M	P	M	m
Celephaisian	5	LsLLsLLs	M	m	P	M	P	M	M
Ilarnekian	6	LLsLsLLs	M	M	P	M	P	M	M
Dylathian	7	LLsLLsLs	M	M	P	M	A	M	M

g_

I think Celephaisian is sometimes treated as the default because it melodically resembles a mix of Aeolian and Melodic Minor, which fits the oneirotonic sound well. This is my most used mode, although I also like Ultharian, which feels like a mix of Aeolian and Dorian.

Modes of melodic Mnarian

The melodic Mnarian (LsLsLLLs ascending, LsLsLsLL descending) scale has an "LLL" and recreates the characteristic of diatonic modes such as Phrygian and Locrian which have LLL prominently. It's the unique binary MODMOS of oneirotonic that doesn't have consecutive s steps. The mode names of melodic Mnarian are portmanteaus of the oneirotonic mode and the diatonic mode the mode sounds most similar to.

Mode name	Pattern	1-step	2-step	3-step	4-step	5-step	6-step	7-step
Sarlocrian	sLsLsLLL	m	m	d	m	d	m	m
Sardorian	sLsLLLsL	m	m	d	m	P	M	m
Mnaeolian	LsLsLsLL	M	m	P	m	P	m	m
Mnionian	LsLsLLLs	M	m	P	m	P	M	M
Ulphrygian	sLLLsLsL	m	m	P	M	P	M	m
Celdorian	LsLLLsLs	M	m	P	M	A	M	M
Ilarmixian	LLsLsLsL	M	M	P	M	P	M	m
Dylydian	LLLsLsLs	M	M	A	M	A	M	M

Notable tunings and tuning ranges

• 37edo (hardness 5/4) to 29edo (hardness 4/3): support the 2.7/5.11/5.13/5 temperament Ammonite where the generator is 13/10, the large step is 11/10, and the minor 4-step is 7/5.
• 21edo (hardness 3/2)
• 13edo (hardness 2/1)
• 31edo (hardness 5/2): A-Team tuning with an excellent 5/4. Approximates 13:17:19.
• 18edo (hardness 3/1): Minor 2-step is an excellent 7/6; 12edo whole tone. Practically optimal for 2.9.21 A-Team.
• 23edo (hardness 4/1): Supports A-Team with diminished 3-step = ~6/5.
• 28edo (hardness 5/1) and harder support 2.3.7 Buzzard which equates four perfect 3-oneirosteps with a 3/1.

Ground's subtypes

g_

This section is written from the perspective of User:Ground and may feature proposed concepts.

I split oneirotonic tunings into three subtypes depending on how well they correspond to low-limit JI: Buzzard, "A-strad", and "Corvic" (which may itself be split into the rank-2 temperaments Petrtri and Ammonite). Different ranges of oneirotonic generators may be represented by a few intervals of similar complexity. This is very different from diatonic, where every generator is approximately 3/2 or 4/3. I will focus on three of them: 13/10, 17/13, and 21/16. I ignore 9/7 because it's outside the range and 25/19 because it's used extremely rarely. 21/16 is clearly the generator of both Buzzard and A-strad, although 17/13 shows up in Slendric which is a superset of A-strad; 13/10 is clearly the generator of Corvic, although 17/13 is equated to it in the base temperament. 17/13 is close to the boundary between subtypes and does not clearly correspond to either. This splits the range into two slightly broader categories: 21/16 oneiro and 13/10 oneiro.

Buzzard

• Defining characteristics: 5edo cluster temperament, higher-complexity 7-limit approaching microtemperament.
  • Approximate generator range: 11\28 to 2\5
  • Approximate optimal tunings: 19\48, 21\53, 23\58
• Buzzard is an odd bit of asymmetry, given how the boundary between A-strad and Corvic is almost exactly in the middle of the oneirotonic range. This is because it removes the straddling, introducing strong concordances that upset the usual balance. Most importantly, Buzzards's subfifth at 4 generators is an accurate 3/2.
• An 8edo cluster temperament would be expected on the other side of the range. This is just non-over-one Corvic, which is tuned well over a much wider range.

"A-strad"

(straddle/dual-3 A-team)

• Defining characteristics: Straddled rough approximations of 4:5:6:7. Not as accurate as Buzzard, but with few other clear otonal chords.
  • Approximate generator range: 5\13 to 11\28
  • Approximate optimal tunings: 19\49, 26\67, 7\18
• Every other Mothra generator
• Basic non-straddle rank-2: 2.9.5.7/3 5&13
  • Comma list: 81/80 1728/1715, which is Mothra in 2.3.5.7
• Straddled GTO string: 1200 | 2.<3.>3.5.<7.>7 || 0 4 -1 6 2 -3
• Various extensions are possible, but my usage of this tuning range doesn't depend on as many otonal chords as Corvic.

"Corvic"

(hard not to think of crows here)

• Defining characteristics: No-3 tertian chords 9:11:13:16:19, 11:13:17:20, 10:13:16, and so on. Extremely xenharmonic.
  • Approximate generator range: 3\8 to 5\13 (all are somewhat close to optimal for non-over-one)
  • Approximate optimal tunings (rank-3): 14,12\37, 19,16\50
• Basic rank-3: 2.5.11.13.17 13&16&21
• Extended rank-3: 2.9.5.7.11.13.17.19.23 13&16&21
  • The extended subgroup is not the most accurate, but it's very low-complexity and applies reasonably to any soft oneirotonic edo. 9 and 7 have especially high error because 9/p is best close to 5\13 and 7/p is best close to 3\8. 9 is sharp and 7 is flat because 9/7 is very flat of the oneiro generator it's mapped to.
    • An alternate mapping of 9/8 is better in edos like 37 and 50, equivalent to 16/11 minus the 13/10 generator. This removes the accurate oneirotonic 9/5 found near 13edo and its accompanying chords, but improves the 9/7 and occurs very often in 5L3m3s as the acute major 1-step. The edo join should be altered to 13&16&21[-9], although this may provide unusual default generators.
    • With 7 often being flat, the oneiro generator can be interpreted as a flat 21/16, providing an often good 3.
• Being rank-3 allows the temperament to translate easily to the 5L3m3s aberrismic scale. In generator-offset notation, the scale is "bicatenary" (two generator chains) and the generator is oneirotonic. All of these functional primes besides the extension's 19 and 23 are offset, and this offset can be removed from the temperament, resulting in a mostly non-over-one 2.{9:5:7:11:13:17}.19.23 (which I might also represent over-5 as 2.9/5.7/5.11/5.13/5.17/5.19.23).
• The rank-3 representation or the non-over-one rank-2 reduction could be represented with a straddle temperament, but I choose not to do that because some rank-2 tunings (Petrtri extension and Ammonite) represent the primes themselves accurately.
• May also be represented as a DR temperament based on its otonal tertian chords: GTO 1200 || +1[-1 2]+2 +4[1 -1]+3 +2[-1 2]+3 +1[4 -6]+1 | 1 1 -4 -4.

Corvic Tuning Examples in Cents (~5/4 offset)

		5\13, 4\13				18\47, 15\47				13\34, 11\34				8\21, 7\21				19\50, 16\50				11\29, 19\58				14\37, 12\37				3\8, 5\16				3\8, 8\24
		-1	0	1		-1	0	1		-1	0	1		-1	0	1		-1	0	1		-1	0	1		-1	0	1		-1	0	1		-1	0	1
-7		0	369	738		0	383	766		0	388	776		0	400	800		24	408	792		21	414	807		32	422	811		75	450	825		50	450	850
-6		462	831	0		460	843	26		459	847	35		457	857	57		480	864	48		476	869	62		486	876	65		525	900	75		500	900	100
-5		923	92	462		919	102	485		918	106	494		914	114	514		936	120	504		931	124	517		941	130	519		975	150	525		950	150	550
-4		185	554	923		179	562	945		176	565	953		171	571	971		192	576	960		186	579	972		195	584	973		225	600	975		200	600	1000
-3		646	1015	185		638	1021	204		635	1024	212		629	1029	229		648	1032	216		641	1034	228		649	1038	227		675	1050	225		650	1050	250
-2		1108	277	646		1098	281	664		1094	282	671		1086	286	686		1104	288	672		1097	290	683		1103	292	681		1125	300	675		1100	300	700
-1		369	738	1108		357	740	1123		353	741	1129		343	743	1143		360	744	1128		352	745	1138		357	746	1135		375	750	1125		350	750	1150
0		831	0	369		817	0	383		812	0	388		800	0	400		816	0	384		807	0	393		811	0	389		825	0	375		800	0	400
1		92	462	831		77	460	843		71	459	847		57	457	857		72	456	840		62	455	848		65	454	843		75	450	825		50	450	850
2		554	923	92		536	919	102		529	918	106		514	914	114		528	912	96		517	910	103		519	908	97		525	900	75		500	900	100
3		1015	185	554		996	179	562		988	176	565		971	171	571		984	168	552		972	166	559		973	162	551		975	150	525		950	150	550
4		277	646	1015		255	638	1021		247	635	1024		229	629	1029		240	624	1008		228	621	1014		227	616	1005		225	600	975		200	600	1000
5		738	1108	277		715	1098	281		706	1094	282		686	1086	286		696	1080	264		683	1076	269		681	1070	259		675	1050	225		650	1050	250
6		0	369	738		1174	357	740		1165	353	741		1143	343	743		1152	336	720		1138	331	724		1135	324	714		1125	300	675		1100	300	700
7		462	831	0		434	817	0		424	812	0		400	800	0		408	792	1176		393	786	1179		389	778	1168		375	750	1125		350	750	1150

Color Key

	Unison and mappings of core primes 5, 11, 13, and 17.
	Optional mappings of 7±, 19, and 23.
	Optional mappings of 3± and 9±.

5L3m3s quasi-oneirotonic

This scale may be called "sleneiro" being slentonic at m=s and oneirotonic at s=0. There are two step orders that satisfy all three monotone-MOS conditions: LmLsLmLsLms (R) and LmLsLmLsmLs (L). RA Celephaisian (sLmLsLmLsLm) is like Blackdye A Aeolian with a semitone added at the top.

KC

An obvious untempered JI interpretation for sleneiro is GS(13:15:17)[11] in the 2.(13:15:17) subgroup. Tempering out the 0.7-cent comma 83521/83486, which equates four stacked 17/13's to one 19/13, extends this to 2.(13:15:17:19).
In fact, the JI scale suggests many efficient temperings, resulting in the rank-3 temperament 2.27.31.49.53.(13:15:17:19)[5 & 44 & 62]. Extending to prime 3 and tempering out 676/675 and 2601/2600 results in 2.3.5.13.17.19.31.49.53[106 & 111], generated by a flattened ~147/128.

19\50, 16\50; 5L3m3s RA Celephaisian Highlighted; BEADGCFX Aberrismic Notation

	-1		0		1
-7	A+	24	D#	408	Gx-	792
-6	D+	480	G#	864	Cx-	48
-5	G+	936	C#	120	Fx-	504
-4	C+	192	F#	576	Xx-	960
-3	F+	648	X#	1032	B#-	216
-2	X+	1104	B	288	E#-	672
-1	Bb+	360	E	744	A#-	1128
0	Eb+	816	A	0	D#-	384
1	Ab+	72	D	456	G#-	840
2	Db+	528	G	912	C#-	96
3	Gb+	984	C	168	F#-	552
4	Cb+	240	F	624	X#-	1008
5	Fb+	696	X	1080	B-	264
6	Xb+	1152	Bb	336	E-	720
7	Bbb+	408	Eb	792	A-	1176

Chords of oneirotonic

This page or section deals with proposed concepts. The terminology and concepts used in it are developed by one person or a small group and may lack widespread adoption.

These chord names have been proposed by ground and Inthar. The names have been selected to avoid overloading diatonic chord names and symbols.

Fifth-bounded triads

The prefix "tract" is used to denote compressions of diatonic chords, and symbolically, >...< is used to denote tract-diatonic chords.

First and second inversions of triads are denoted triad₁ and triad₂ in chord symbols, for example >maj<₁ = the first inversion of the tract-major triad.

Perfect fifth (sharp fifth) bounded triads

Name (notation)	Description	In degrees (TAMNAMS)	13edo tuning	Listen	18edo tuning	Listen
Supertaphric (suptph)		0–m4d–P5d	0–554–738		0–533–733
Taphric (tph)	From τάφρος "trench", because the fifth generators go down–up.	0–P3d–P5d	0–462–738		0–467–733
Subtaphric (subtph)		0–M2d–P5d	0–369–738		0–400–733
Neutral (neu)	Splits the sharp fifth in half.		0–369–738
Suprasimic (supsim)		0–d3d–P5d	0–369–738		0–333–733
Simic (sim)	From Modern Greek σημείο "point", because the fifth generators go up–down.	0–m2d–P5d	0–277–738		0–267–733
Subsimic (subsim)		0–M1d–P5d	0–185–738		0–200–733

Major tritone (flat fifth) bounded triads

Name (notation)	Description	In degrees (TAMNAMS)	13edo tuning	Listen	18edo tuning	Listen
Tract-sus4 (>sus4<)		0–P3d–M4d	0–462–646		0–467–667
Tract-major (>maj<)		0–M2d–M4d	0–369–646		0–400–667
Tract-neutral (>neu<)	Splits the flat fifth in half.	0–n2d–M4d			0–333–667
Tract-minor (>min<)		0–m2d–M4d	0–277–646		0–267–667
Tract-sus2 (>sus2<)		0–M1d–M4d	0–185–646		0–200–667

Other triads

Other triads

Name (notation)	Description	In degrees (TAMNAMS)	13edo tuning	Listen	18edo tuning	Listen
Grammic (grm)	From "line", since the generators form a line.	0-P3-m6	0-462-923		0-467-933

Notes

Taphric, simic, and grammic are all antipentic terms but otherwise do not reflect specific tuning ranges. Subtaphric/suprasimic/etc. chords in grammic form can just be called inversions the same way diatonic chords are. Grammic may also be known as sensic in checkertonic.

Jaimbee and Inthar's oneirotonic functional system

This page or section deals with proposed concepts. The terminology and concepts used in it are developed by one person or a small group and may lack widespread adoption.

Todo: convert to KISS notation

The following system has been developed by Jaimbee and Inthar. It is meant for 13edo and tunings close to 13edo or somewhat harder (like 31edo or 18edo). 18edo oneirotonic has a discordant >maj< chord and so has a more stable tonal center on minor keys.

For a DR-forward framework like this, prefer mellow timbres to bright ones to bring out the DR effect.

Note on symbols

Degrees are indicated with Arabic numerals (or "t" for tritone/4-mosstep) with hats. In order:

$\hat{1},\hat{2},\hat{3},\hat{4},\hat{\mathrm{t}},\hat{5},\hat{6},\hat{7}.$

When not modified, these denote the pitches of the Ilarnekian (LLsLsLLs) mode. Sharp and flat modifiers (e.g. $\mathrm{♭}\hat{3}$) work as in standard functional diatonic chord notation — they denote chroma (L - s) alterations from Ilarnekian.

The chord symbols used are ground's system, described above.

Basic chords

The most basic chords in this functional harmony system are:

• Tract-major triad 0-4-7\13 (>maj<): A compressed major triad that sounds desaturated and somewhat bittersweet. Somewhat dubiously +1+1, and the DR effect benefits from added notes. Oneirotonic provides only two of these triads, so alterations are somewhat frequently used to get this triad. The tract-major triad has the following important tetrad supersets:
  • 0-2-4-7\13 (>majsus2<): Reinforces the quasi-DR effect with an extra tone; approximately +1+1+2.
  • 0-4-7-10\13 (>dom7<): A compressed dominant tetrad; approximately +1+?+1.
  • 0-4-7-12\13 (>maj<7): Approximately +1+1+2.
• The simic triad 0-3-8\13 (sim): A bright and brooding if somewhat hollow-sounding minor triad. Approximately 17:20:26 or +1+2. The important supersets are:
  • 0-3-8-10 (sim6): Approximately +1+2+1.
  • 0-3-8-12 (simmaj7): Approximately +1+2+2.
  • 0-3-8-11 (simmin7): Something like a minor 7th tetrad.
  • 0-3-8-15 (simadd9)
  • 0-3-8-12-15 (simmaj7add9): A concatenation of the minor +1+2 and major +1+1 triads.
• 0-5-9\13 (>IV/I<): A +1+1 triad and a compressed 2nd inversion major triad. Approximately 13:17:21.
  • 0-5-7-9: Approximately +2+1+1.
  • 0-5-9-12: A tract-major triad on top of a subfourth.
  • 0-5-9-12-15
  • 0-5-7-9-12-15-17
• 0-5-7\13 (>sus4<): Compressed sus4. Approximately +2+1.
• 0-4-8\13 (>aug<): "Submajor augmented" triad.
• 0-3-6\13 (>dim<): The most diminished-like triad.

Functional patterns

KC

13edo oneirotonic enjoys two main (rooted) delta-rational sonorities analogous to major and minor triads: 0-(185)-369-646 ("tract-major triad" or just ">maj<") and 0-277-738-923 ("simic sixth" or "sim6"). One of these chords are on the root in the 6 brightest modes of oneirotonic. In the two darkest modes, I think 0-277-738-1015 or 0-738-1015-277 works well. The chord 0-277-738 will be called "simic", and 0-277-646-923 will be called "tract-minor 7th". If you wish to avoid the dissonance of the fifths, just using 10\13 (e.g. [0 4 10 (12)]\13, [0 3 10 (12)]\13) works well.

Progressions

KC

Common motions:

• $\hat{1}$ (>maj< or sim6) → $\hat{2}$ sim6
• $\hat{1}$ (>maj< or sim6) → $\hat{4}$ sim6 (when ending on $\hat{1}$ this sounds like diatonic V to I)
• $\hat{1}$ (>maj< or sim6) → $\mathrm{♭}\hat{6}$ sim6
• $\hat{1}$ >maj< → $\hat{5}$ >maj<, $\hat{1}$ sim6 → $\hat{5}$ (>maj< or sim6) (when ending on $\hat{1}$ this is a "dominant to tonic" motion)
• $\hat{1}$ >maj< → $\hat{3}$ >maj<
• $\hat{2}$ sim6 → $\mathrm{♭}\hat{2}$ >maj< → $\hat{1}$ >maj<

Functional harmony

Like classical functional harmony, our functional harmony system is based on two tonalities:

1. oneiromajor, with tonic chord tract-major and the pitches of Dylathian and Ilarnekian modes
2. oneirominor, with tonic chord simic 6th and the pitches of Celephaisian and Ultharian modes

Oneiromajor (Dylathian)

bz

This section is written from the perspective of User:Jaimbee and may feature proposed concepts.

In the below, interval names are in ADIN.

In Dylathian, we find tract-major chords on the $\hat{1}$ and $\hat{4}$ degrees, while simic chords appear on the degrees $\hat{2},\hat{\mathrm{t}},\hat{6},\hat{7}.$ For the $\hat{3}$ and $\mathrm{♯}\hat{5}$ degrees, you get a chord of edo steps 0-3-9-11, which is the third type of DR tetrad, which could be viewed as an inversion of the tract-dominant tetrad. Alternatively, you could also play a DR chord of scale degrees 0-5-9 on the third degree, and in some contexts it may be favorable (see below).

For each of these chords, we can associate functions with them. The simplest of these relationships is between the root tract-major chord and the tract-major chord on the perfect fourth. By adding octaves on certain notes, we can recreate the familiar dominant cadence from diatonic, only now on the $\hat{4}$ rather than the $\mathrm{♯}\hat{5}.$ The most simple of these progressions would look something like this (in ground's notation):

1. B-D-F-G-F
2. E-G-X-C-D
3. B-D-F-G-F

Or, in 13edo steps:

1. 0-2-4-7-17
2. 5-7-9-12-18
3. 0-2-4-7-17

In this cadence, the fifth on E is so narrow that it creates a leading tone relative to the root, and by playing the octaves above E, you can create a minor tritone that wants to resolve inwards to the tract-major chord on the root. The presence of the octaves above the major third helps drive this resolution, but can be omitted. Another neat effect is that given the dominant is now on the $\hat{4},$ then the $\hat{2}$ simic sixth chord would be exactly halfway to the dominant, making it the mediant. It also has a much nicer simic sixth chord on it compared to the $\hat{3}$ 1st inversion tract-major chord, making it more akin to how the mediant works in diatonic.

We can also relate other chords to the dominant, mediant and tonic. The relative minor is more or less exactly analogous to diatonic, being a minor third below the tonic (in the case of B Dylathian, it would be A Celephaïsian, the $\hat{6}$ with the "minor" tonality). The mediant can also function as a secondary dominant for resolutions to the relative minor; the highest note in the $\hat{2}$ simic chord is one semitone below the minor third of the $\hat{6}$ simic chord. By playing the octave above certain notes, resolving between the two modes is pretty simple.

1. B-D-F-G-B
2. `D-`E-`A-`C-C
3. `A-`B-`E-`G-B

In 13edo steps:

1. 0-2-4-7-13
2. `2-`5-`10-`12-12
3. `10-0-5-7-13

The ` denotes playing an octave lower than the root.

The $\hat{2}$ (D minor) and $\hat{6}$ (A minor) would probably sound the smoothest when played in a lower register than the tonic (B major) as notated, but if you want to move upwards from the root it still works. Resolving from the relative minor (A minor) to the tonic (B major) is a pretty weak but still usable resolution. Another neat resolution is moving from the $\hat{3}$ (inverted tract-major) to the dominant $\hat{4}.$

If you play the 0-5-9 chord on $\hat{3},$ the lowest note will be a semitone lower than the lowest in the dominant, and the highest note will be a semitone higher than the highest in the dominant. By either extending the 0-5-9 chord to 0-3-5-9, or simplifying the dominant chord to a 0-4-7 chord, you can drive this resolution very powerfully, and this could either create a chain of strong resolutions going $\hat{3}$ (inverted tract-major) - $\hat{4}$ - $\hat{1},$ or it could help drive resolutions to the Ilarnekian mode above (in this case, E Ilarnekian).

Technically you wouldn't have to extend or simplify any of these chords, but the triad next to all the tetrads feels somewhat empty. All in all, using this technique you could probably simplify all the tetrads down to 0-4-7 and 0-3-8 for tract-major and simic, respectively. These would help since the 0-3-5-9 chord doesn't have much of a DR effect, while the simplified tract-major and simic still have a DR effect, though a bit weaker than the tetrads. The $\hat{6}$ inverted tract-major (9-12-18-20) chord also has some neat features, as it functions as an inversion of the dominant $\hat{4}$ chord. It also doesn't need any extensions with octaves to work well unlike the dominant chord, so it could be seen as a more tense version of dominant. Since it also drives the resolution up by a minor third, the same tetrad on the $\hat{3}$ could be used to drive a resolution to a tract-major $\mathrm{♯}\hat{5},$ helping to shift the key center from B to G#. If done twice, this resolution can shift your key center up a minor third from B -> G# -> F#, which gives the progression a really jazzy feel.

The only chord we haven't covered now would be the simic $\hat{\mathrm{t}}$ (namely 7-10-15-17). This chord has a much weaker relationship to the other chords, so it doesn't have any strong directionality. However, it does share some notes with a few important chords, notably the $\hat{1}$ chord and the relative minor on the $\hat{6}.$ A resolution to either of these will be similarly strong, that is to say, not very strong. In this case it could also be seen as a secondary mediant which is not the relative minor, about halfway between the $\hat{1}$ chord and the $\hat{7}$ chord an octave above it, and either of these resolutions would probably sound fine in most contexts. This gives it a role completely unlike any of the functions in traditional diatonic. It also works pretty well as a setup for the $\mathrm{♯}\hat{5}$ inverted tract-major, so in a progression it can help add some flair or beef to the resolution.

Oneiromajor (Ilarnekian)

bz

This section is written from the perspective of User:Jaimbee and may feature proposed concepts.

To start with the basics, Ilarnekian is just Dylathian with a flattened 6th. In E Ilarnekian, you'd get: E G X A C B D F E

With Ilarnekian being the second major mode (after Dylathian), we'd get the same $\hat{1}$ chord, E>maj< One of the most immediate effects we'd see, however, is that the dominant $\hat{4}$ is now IV>min7<. It still can function as a dominant, though only with the added octave above the 4th, and slightly weaker than the Dylathian dominant cadence. Another interesting thing is that the $\hat{4}-\hat{1}$ cadence is now simultaneously a minor plagal and a dominant cadence, radically different from anything in diatonic.

The $\hat{2}$ chord is again simic sixth, with it now driving a secondary resolution to D Ultharian instead of D Celephaïsian. The $\hat{3}$ inverted tract-major chord is also still first inversion tract-major, and also still drives a pretty good resolution up to the simic sixth $\hat{4},$ though admittedly weaker than Dylathian.

The $\hat{\mathrm{t}}$ chord is still simic sixth, and still functions as a secondary mediant.

It gets interesting again when looking at the tract-major $\hat{5}$ chord.

By playing the $\hat{5}$ lower than the tonic and playing the octave above the root of the $\hat{5}$ chord, you get an entirely new approach to a dominant chord. The third of the $\hat{5}$ is one semitone below the tonic, and the octave above the root is one semitone above the fifth of the tonic chord. This drives a very strong inward resolution that resembles dominant in diatonic slightly more than the dominant $\hat{4}$ chord in Dylathian, and a lot more than the tract-minor $\hat{4}$ chord in Ilarnekian. It would look something like this:

• E G X C
• `B `D `F G B
• E G X C

In 13edo steps:

• 0-2-4-7
• `8-`10-`12-2-8
• 0-2-4-7

with ` again notating playing an octave lower than the starting chord.

Moving on, the $\hat{6}$ chord would be simic sixth driving the resolution to the $\hat{4}$ simic sixth, in the same way Dylathian's $\hat{2}$ simic sixth drives the resolution to the relative minor. It would also function as the Ilarnekian relative minor, in this case D Ultharian. The $\hat{7}$ chord would be an inverted tract-major chord, and would drive a resolution to the tonic pretty well. This comes from the fact that the 0-3-9-11 chord would have the minor third become the major second of the tonic, the root move up a semitone to the tonic, and the perfect fifth move down a semitone to become the tritone of the tonic chord. The minor sixth in the chord could be omitted to make the resolution stronger, but the chord would sound much more dissonant.

Oneirominor

KC

This section is written from the perspective of User:Inthar and may feature proposed concepts.

The pitches of the oneirominor tonality are usually that of the Celephaisian mode, but the 7 degree may be either $\mathrm{♭}\hat{7}$ (for its relationship to other degrees) or $\hat{7}$ (mainly but not exclusively for a leading tone function).

The degrees/functions of oneirominor are listed below in generator order.

Degree 3

Similar to diatonic, degree 3 serves as the "relative major".

Alternatively you can use degree 3 to set up the 5 to 1 cadence using one of the following progressions:

• $\mathrm{♭}\hat{3}$>maj< $\hat{5}$>maj< $\hat{1}$sim
• $\mathrm{♭}\hat{3}$>maj< $\hat{4}$sim $\hat{5}$>maj< $\hat{1}$sim

Degree 5

Degree 5, which has a major third on it, has the strongest tendency to go to degree 1 in oneirominor. Alternatively serves as degree 4 of the relative oneiromajor on degree 3, serving to tonicize the relative oneiromajor.

The main cadence in oneirominor is $\hat{5}$>maj< $\hat{1}$sim or $\hat{5}$>dom7< $\hat{1}$sim because of the leading tone.

Degree 1

The tonic.

Degree 4

$\hat{4}$sim $\hat{1}$sim is a weaker cadence than $\hat{5}$>maj< $\hat{1}$sim, in fact weaker than iv -> i in diatonic because there is no descending semitone to the fifth. For a stronger resolution $\hat{4}$sim $\hat{5}$>maj< $\hat{1}$sim is preferable.

Degree 6

Degree 6 is an important function in oneirominor with no analogue in diatonic. It can be used in the repeating $\hat{1}$sim6 -> $\hat{6}$sim6 -> $\hat{1}$sim6 -> $\hat{6}$sim6 -> ... vamp. It can also be used in conjunction with other degrees that are closely related:

• $\hat{4}$sim $\hat{6}$sim or $\hat{6}$sim $\hat{4}$sim
• $\hat{2}$sim $\hat{6}$sim or $\hat{6}$sim $\hat{2}$sim

Degree 2

Similar to degree 3, degree 2 can be used to set up the 5 to 1 cadence:

$\hat{2}$sim $\hat{4}$sim $\hat{5}$>maj< $\hat{1}$sim

Or it can be used in conjunction with degree 4 or 6:

• $\hat{1}$sim $\hat{2}$sim $\hat{4}$sim
• $\hat{1}$sim $\hat{4}$sim $\hat{2}$sim
• $\hat{1}$sim $\hat{2}$sim $\hat{6}$sim
• $\hat{1}$sim $\hat{6}$sim $\hat{2}$sim

Degree t

Degree t is an oneirotonic function with no analogue in diatonic. It serves several secondary roles, being related to more central functions in oneirominor, $\hat{6},$ $\hat{4}$ and $\hat{2}$:

• $\hat{6}$sim $\hat{\mathrm{t}}$sim or $\hat{\mathrm{t}}$sim $\hat{6}$sim
• $\hat{4}$sim $\hat{\mathrm{t}}$sim or $\hat{\mathrm{t}}$sim $\hat{4}$sim
• $\hat{2}$sim $\hat{\mathrm{t}}$sim or $\hat{\mathrm{t}}$sim $\hat{2}$sim

Degree 7

Leading tone is the main function of $\hat{7}$. It can also be related to degrees $\hat{2},$ $\hat{\mathrm{t}}$ and $\hat{6}$:

• $\hat{2}$sim $\hat{7}$sim or $\hat{7}$sim $\hat{2}$sim
• $\hat{6}$sim $\hat{7}$sim or $\hat{7}$sim $\hat{6}$sim
• $\hat{7}$sim $\hat{\mathrm{t}}$sim or $\hat{\mathrm{t}}$sim $\hat{7}$sim

However, these are fairly weak because $\hat{7}$ is fairly distant from the tonic in generator space.

The 7th degree may be flattened to give it a stronger functional relationship to the tonic or other degrees; the flattened 7th degree (relative to the Celephaisian mode) provides a $\hat{5}$ "dominant" for the degree $\mathrm{♭}\hat{3}$.