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Scale 921

Scale 921, Ian Ring Music Theory

i = imperfections

Tones6 (hexatonic)
Pitch Class Set{0,3,4,7,8,9}
Forte Number6-Z44
Rotational Symmetrynone
Hemitonia3 (trihemitonic)
Cohemitonia1 (uncohemitonic)
prime: 615
enantiomorph: 825
Deep Scaleno
Interval Vector313431
Interval Spectrump3m4n3sd3t
Distribution Spectra<1> = {1,3}
<2> = {2,4,6}
<3> = {5,7}
<4> = {6,8,10}
<5> = {9,11}
Spectra Variation2.333
Myhill Propertyno


Modes are the rotational transformation of this scale. Scale 921 can be rotated to make 5 other scales. The 1st mode is itself.

2nd mode:
Scale 627
Scale 627, Ian Ring Music Theory
3rd mode:
Scale 2361
Scale 2361, Ian Ring Music Theory
4th mode:
Scale 807
Scale 807: Raga Suddha Mukhari, Ian Ring Music TheoryRaga Suddha Mukhari
5th mode:
Scale 2451
Scale 2451: Raga Bauli, Ian Ring Music TheoryRaga Bauli
6th mode:
Scale 3273
Scale 3273: Raga Jivantini, Ian Ring Music TheoryRaga Jivantini


The prime form of this scale is Scale 615

Scale 615Scale 615, Ian Ring Music Theory


The hexatonic modal family [921, 627, 2361, 807, 2451, 3273] is the negative of the hexatonic modal family [411, 867, 1587, 2253, 2481, 2841]


The inverse of a scale is a reflection using the root as its axis. The inverse of 921 is 825

Scale 825Scale 825, Ian Ring Music Theory


Only scales that are chiral will have an enantiomorph. Scale 921 is chiral, and its enantiomorph is scale 825

Scale 825Scale 825, Ian Ring Music Theory

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 923Scale 923: Ultraphrygian, Ian Ring Music TheoryUltraphrygian
Scale 925Scale 925: Chromatic Hypodorian, Ian Ring Music TheoryChromatic Hypodorian
Scale 913Scale 913, Ian Ring Music Theory
Scale 917Scale 917, Ian Ring Music Theory
Scale 905Scale 905, Ian Ring Music Theory
Scale 937Scale 937, Ian Ring Music Theory
Scale 953Scale 953: Mela Yagapriya, Ian Ring Music TheoryMela Yagapriya
Scale 985Scale 985: Mela Sucaritra, Ian Ring Music TheoryMela Sucaritra
Scale 793Scale 793, Ian Ring Music Theory
Scale 857Scale 857, Ian Ring Music Theory
Scale 665Scale 665: Raga Mohanangi, Ian Ring Music TheoryRaga Mohanangi
Scale 409Scale 409, Ian Ring Music Theory
Scale 1433Scale 1433, Ian Ring Music Theory
Scale 1945Scale 1945, Ian Ring Music Theory
Scale 2969Scale 2969, Ian Ring Music Theory

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