Ban Svetle
The Antau Šerianei contains 21 heptatonic (bispatis) modes, arranged into three mode families. (There are also hexatonic and octatonic modes, which belong to these families too.) The Aďivro, completed in 2350, gives a partial overview, because the modes were used in chant, but it is missing some information and is unclear in places. A fuller exposition was created around 2440 by Vissanava of Claiies Oscais, namely the Bineia Timoreie or ‘Register of Scales’, though its dissemination was interrupted by nomadic incursions. The Bineia Timoreie was reworked and greatly expanded (a future post will explain how) in both Caďinor and Old Verdurian in the 2640s at the University of Šerian. A Kebreni version of Vissanava’s original, Zenihite Bina, appeared in the 2700s.
Each mode family (which we could also call a scale) is called in Verdurian a ban ‘way, path’. The principal is the Ban Svetle, named after the Svetla river, on which sits Ctésifon.
This is derived by taking a starting note (which is called Enäron) and tuning three perfect fifths (cumî ‘hearths’) either side of it ‒ you will find 7 distinct notes. (Green is for our letter-names; the dots on the Verdurian ones indicate octaves.)
- F
B̤ - Boďneay
- C
K̤ - Řavcaëna
- G
Ạ - Ažirei
- D
Ė - Enäron
- A
Ḟ - Fidra
- E
C̈ - Caloton
- B
S̈ - Eši
Resolve these into the same octave, and add the root note again in the higher octave, and you will find the diatonic scale of our own system (in its Pythagorean incarnation).
- D
Ẹ - Enäron
- E
C̣ - Caloton
- F
Ḅ - Boďneay
- G
Ạ - Ažirei
- A
F̣ - Fidra
- B
Ṣ - Eši
- C
Ḳ - Řavcaëna
- D
Ė - Enäron
We have not only created a mode family, but also the first of the seven rotational modes within it. The mode family is, to us, the diatonic. This is the best translation of ban Svetle.
To us the mode is called the Dorian mode (on D). To Verdurians it is the čimora Svetle, the Svetla mode. It is, in terms of cultural importance, the C major of Eretald: the scale which you would assume as default without other instruction.
The fingerholes of woodwind instruments generally play this scale as default. (Actually, there are two types of kena / flute: the Dorian and the Aeolian. More on why later.) Picking up a harp (soî glindrelî) or a zither (dičura), one would expect it to be tuned this way. Brass instruments are usually tuned in Řavcaëna (C) ‒ because of the harmonic series, this means that they also play the Svetla mode on Enäron by default.
If you know a bit about intervals, you might notice an interesting detail: this mode is symmetrical. We can express the intervals in it as numbers ‒ we’ll use 1 for the small interval (semitone, half-step, Ver. metuy or šeli) and 2 for the large one (tone, whole step, Ver. čima). The interval size up to the next note is placed beneath the note itself.
Ẹ- (2
C̣- 1
Ḅ- 2)
Ạ- 2
F̣- (2
Ṣ- 1
Ḳ- 2)
This symmetry will turn out to be important.
Modal rotations
There are 6 further modes based on the rotations of this scale. (None of them have the same feature of symmetry.) They are named after major tributaries of the Svetla, heading downstream from the source. We have this nomenclature in Caďinor, Verdurian and Kebreni, though it can be assumed to exist in other wider-Eretaldan languages too, usually as the regular reflex of the Caďinor term.
The modes are presented with their Melakarta number (from the Carnatic system of South India) and their most common name in the West.
| Notes | Intervals | Caďinor | Verdurian | Kebreni | Mk | Western |
| ẸC̣ḄẠF̣ṢḲ | 2122212 | SPE̗TELAE | Svetle | Soboderte | 22 | Dorian |
| C̣ḄẠF̣ṢḲẸ | 1222122 | LIMINTAE | Limete | Linadate | 8 | Phrygian |
| ḄẠF̣ṢḲẸC̣ | 2221221 | ME̗HONAE | Meune | Hymbote | 65 | Lydian |
| ẠF̣ṢḲẸC̣Ḅ | 2212212 | ARAUNIREI | Aränëi | Akentate | 28 | Mixolydian |
| F̣ṢḲẸC̣ḄẠ | 2122122 | HAEDELEI | Adelei | Melezute | 20 | Aeolian / natural minor |
| ṢḲẸC̣ḄẠF̣ | 1221222 | NEULAE | Nöle | Nylate | - | Locrian |
| ḲẸC̣ḄẠF̣Ṣ | 2212221 | ME̗NELAE | Menle | Menylte | 29 | Ionian / major |
These modes are the most familiar to us in the Eretaldan system, and due to their straightforward derivation process they are cross-culturally common across Earth (and Almea). In the next posts I will lay out the other two mode families, and then describe the AŠ’s hexatonic and octatonic variants.