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Scale 991

Scale 991, Ian Ring Music Theory
ii

i = imperfections

Tones9 (nonatonic)
Pitch Class Set{0,1,2,3,4,6,7,8,9}
Forte Number9-5
Rotational Symmetrynone
Palindromicno
Hemitonia7 (multihemitonic)
Cohemitonia5 (multicohemitonic)
Imperfections2
Modes8
Prime?yes
Chiralityyes
enantiomorph: 3961
Deep Scaleno
Interval Vector766674
Interval Spectrump7m6n6s6d7t4
Distribution Spectra<1> = {1,2,3}
<2> = {2,3,4}
<3> = {3,4,5}
<4> = {4,5,6}
<5> = {6,7,8}
<6> = {7,8,9}
<7> = {8,9,10}
<8> = {9,10,11}
Spectra Variation1.778
Myhill Propertyno
Coherenceno
Heliotonicno

Modes

Modes are the rotational transformation of this scale. Scale 991 can be rotated to make 8 other scales. The 1st mode is itself.

2nd mode:
Scale 2543
Scale 2543, Ian Ring Music Theory
3rd mode:
Scale 3319
Scale 3319, Ian Ring Music Theory
4th mode:
Scale 3707
Scale 3707, Ian Ring Music Theory
5th mode:
Scale 3901
Scale 3901, Ian Ring Music Theory
6th mode:
Scale 1999
Scale 1999, Ian Ring Music Theory
7th mode:
Scale 3047
Scale 3047, Ian Ring Music Theory
8th mode:
Scale 3571
Scale 3571, Ian Ring Music Theory
9th mode:
Scale 3833
Scale 3833, Ian Ring Music Theory

Prime

This is the prime form of this scale.

Negative

The nonatonic modal family [991, 2543, 3319, 3707, 3901, 1999, 3047, 3571, 3833] is the negative of the tritonic modal family [67, 193, 2081]

Inverse

The inverse of a scale is a reflection using the root as its axis. The inverse of 991 is 3961

Scale 3961Scale 3961, Ian Ring Music Theory

Enantiomorph

Only scales that are chiral will have an enantiomorph. Scale 991 is chiral, and its enantiomorph is scale 3961

Scale 3961Scale 3961, 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 989Scale 989, Ian Ring Music Theory
Scale 987Scale 987, Ian Ring Music Theory
Scale 983Scale 983, Ian Ring Music Theory
Scale 975Scale 975: Messiaen mode 4, Ian Ring Music TheoryMessiaen mode 4
Scale 1007Scale 1007, Ian Ring Music Theory
Scale 1023Scale 1023, Ian Ring Music Theory
Scale 927Scale 927, Ian Ring Music Theory
Scale 959Scale 959, Ian Ring Music Theory
Scale 863Scale 863, Ian Ring Music Theory
Scale 735Scale 735, Ian Ring Music Theory
Scale 479Scale 479, Ian Ring Music Theory
Scale 1503Scale 1503, Ian Ring Music Theory
Scale 2015Scale 2015: Messiaen mode 7, Ian Ring Music TheoryMessiaen mode 7
Scale 3039Scale 3039, 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