The Exciting Universe Of Music Theory

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Scale 1927

Scale 1927, Ian Ring Music Theory

Bracelet Diagram

The bracelet shows tones that are in this scale, starting from the top (12 o'clock), going clockwise in ascending semitones. The "i" icon marks imperfect tones that do not have a tone a fifth above. Dotted lines indicate axes of symmetry.

Tonnetz Diagram

Tonnetz diagrams are popular in Neo-Riemannian theory. Notes are arranged in a lattice where perfect 5th intervals are from left to right, major third are northeast, and major 6th intervals are northwest. Other directions are inverse of their opposite. This diagram helps to visualize common triads (they're triangles) and circle-of-fifth relationships (horizontal lines).


Cardinality7 (heptatonic)
Pitch Class Set{0,1,2,7,8,9,10}
Forte Number7-5
Rotational Symmetrynone
Reflection Axesnone
enantiomorph: 3133
Hemitonia5 (multihemitonic)
Cohemitonia3 (tricohemitonic)
prime: 239
Deep Scaleno
Interval Vector543342
Interval Spectrump4m3n3s4d5t2
Distribution Spectra<1> = {1,2,5}
<2> = {2,3,6}
<3> = {3,4,7}
<4> = {5,8,9}
<5> = {6,9,10}
<6> = {7,10,11}
Spectra Variation3.429
Maximally Evenno
Maximal Area Setno
Interior Area1.933
Myhill Propertyno
Ridge Tonesnone

Harmonic Chords

Common Triads

These are the common triads (major, minor, augmented and diminished) that you can create from members of this scale.

* Pitches are shown with C as the root

Triad TypeTriad*Pitch ClassesDegreeEccentricityCloseness Centrality
Minor Triadsgm{7,10,2}110.5
Diminished Triads{7,10,1}110.5
Parsimonious Voice Leading Between Common Triads of Scale 1927. Created by Ian Ring ©2019 gm gm g°->gm

Above is a graph showing opportunities for parsimonious voice leading between triads*. Each line connects two triads that have two common tones, while the third tone changes by one generic scale step.



Modes are the rotational transformation of this scale. Scale 1927 can be rotated to make 6 other scales. The 1st mode is itself.

2nd mode:
Scale 3011
Scale 3011, Ian Ring Music Theory
3rd mode:
Scale 3553
Scale 3553, Ian Ring Music Theory
4th mode:
Scale 239
Scale 239, Ian Ring Music TheoryThis is the prime mode
5th mode:
Scale 2167
Scale 2167, Ian Ring Music Theory
6th mode:
Scale 3131
Scale 3131, Ian Ring Music Theory
7th mode:
Scale 3613
Scale 3613, Ian Ring Music Theory


The prime form of this scale is Scale 239

Scale 239Scale 239, Ian Ring Music Theory


The heptatonic modal family [1927, 3011, 3553, 239, 2167, 3131, 3613] (Forte: 7-5) is the complement of the pentatonic modal family [143, 481, 2119, 3107, 3601] (Forte: 5-5)


The inverse of a scale is a reflection using the root as its axis. The inverse of 1927 is 3133

Scale 3133Scale 3133, Ian Ring Music Theory


Only scales that are chiral will have an enantiomorph. Scale 1927 is chiral, and its enantiomorph is scale 3133

Scale 3133Scale 3133, Ian Ring Music Theory


T0 1927  T0I 3133
T1 3854  T1I 2171
T2 3613  T2I 247
T3 3131  T3I 494
T4 2167  T4I 988
T5 239  T5I 1976
T6 478  T6I 3952
T7 956  T7I 3809
T8 1912  T8I 3523
T9 3824  T9I 2951
T10 3553  T10I 1807
T11 3011  T11I 3614

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 1925Scale 1925, Ian Ring Music Theory
Scale 1923Scale 1923, Ian Ring Music Theory
Scale 1931Scale 1931: Stogian, Ian Ring Music TheoryStogian
Scale 1935Scale 1935: Mycryllic, Ian Ring Music TheoryMycryllic
Scale 1943Scale 1943, Ian Ring Music Theory
Scale 1959Scale 1959: Katolyllic, Ian Ring Music TheoryKatolyllic
Scale 1991Scale 1991: Phryptyllic, Ian Ring Music TheoryPhryptyllic
Scale 1799Scale 1799, Ian Ring Music Theory
Scale 1863Scale 1863: Pycrian, Ian Ring Music TheoryPycrian
Scale 1671Scale 1671, Ian Ring Music Theory
Scale 1415Scale 1415, Ian Ring Music Theory
Scale 903Scale 903, Ian Ring Music Theory
Scale 2951Scale 2951, Ian Ring Music Theory
Scale 3975Scale 3975, 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, graph visualization by Graphviz, and MIDI playback by MIDI.js. Some scale names used on this and other pages are ©2005 William Zeitler ( used with permission.

Pitch spelling algorithm employed here is adapted from a method by Uzay Bora, Baris Tekin Tezel, and Alper Vahaplar. (An algorithm for spelling the pitches of any musical scale) Contact authors Patent owner: Dokuz Eylül University, Used with Permission. Contact TTO

Tons of background resources contributed to the production of this summary; for a list of these peruse this Bibliography. Special thanks to Richard Repp for helping with technical accuracy.