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Scale 1621: "Prometheus (Scriabin)"

Also known as: Mystic, Raga Barbara)


i = imperfections

Tones6 (hexatonic)
Pitch Class Set{0,2,4,6,9,10}
Forte Number6-34
Rotational Symmetrynone
Interval Spectrump2m4n2s4dt2
Hemitonia1 (unhemitonic)
Cohemitonia0 (ancohemitonic)
prime: 683
enantiomorph: 1357
Deep Scaleno
Distribution Spectra<1> = {1,2,3}
<2> = {3,4,5}
<3> = {5,6,7}
<4> = {7,8,9}
<5> = {9,10,11}
Spectra Variation1.667
Myhill Propertyno


Modes are the rotational transformation of this scale. Scale 1621 can be rotated to make 5 other scales.

Scale 1429
Scale 1381
Scale 1369
Scale 683
Scale 2389Eskimo Hexatonic 2


The prime form of this scale is Scale 683

Scale 683


The hexatonic modal family [1621, 1429, 1381, 1369, 683, 2389] is the negative of the hexatonic modal family [853, 1237, 1333, 1357, 1363, 2474, 2729]


The inverse of a scale is a reflection using the root as its axis. The inverse of 1621 is 1357 

Scale 1357Takemitsu Tree Line mode 2


Only scales that are chiral will have an enantiomorph. Scale 1621 is chiral, and its enantiomorph is scale 1357

Scale 1357Takemitsu Tree Line mode 2

Nearby Scales:

These are other scales that are similar to this one, created by adding a tone, removing a tone, or moving one note up or down a semitone.

Scale 1623
Scale 1617
Scale 1619Prometheus Neapolitan
Scale 1625
Scale 1629
Scale 1605
Scale 1613
Scale 1637
Scale 1653Minor Romani inverse
Scale 1557
Scale 1589Raga Rageshri
Scale 1685
Scale 1749Acoustic
Scale 1877
Scale 1109
Scale 1365Whole-tone
Scale 597Kung
Scale 2645Raga Mruganandana
Scale 3669

This scale analysis was created by Ian Ring, Canadian Composer of works for Piano, and total music theory nerd. The software used to generate this analysis is an open source project at GitHub. Scale notation generated by VexFlow, and MIDI playback by MIDI.js