The Exciting Universe Of Music Theory

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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 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).

Cardinality | 7 (heptatonic) |
---|---|

Pitch Class Set | {0,1,2,5,6,7,9} |

Forte Number | 7-20 |

Rotational Symmetry | none |

Reflection Axes | none |

Palindromic | no |

Chirality | yes enantiomorph: 3305 |

Hemitonia | 4 (multihemitonic) |

Cohemitonia | 2 (dicohemitonic) |

Imperfections | 2 |

Modes | 6 |

Prime? | yes |

Deep Scale | no |

Interval Vector | 433452 |

Interval Spectrum | p^{5}m^{4}n^{3}s^{3}d^{4}t^{2} |

Distribution Spectra | <1> = {1,2,3} <2> = {2,3,4,5} <3> = {4,5,6} <4> = {6,7,8} <5> = {7,8,9,10} <6> = {9,10,11} |

Spectra Variation | 2 |

Maximally Even | no |

Maximal Area Set | no |

Interior Area | 2.433 |

Myhill Property | no |

Balanced | no |

Ridge Tones | none |

Propriety | Improper |

Heliotonic | yes |

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 Type | Triad^{*} | Pitch Classes | Degree | Eccentricity | Closeness Centrality |
---|---|---|---|---|---|

Major Triads | D | {2,6,9} | 2 | 3 | 1.5 |

F | {5,9,0} | 2 | 3 | 1.5 | |

Minor Triads | dm | {2,5,9} | 2 | 3 | 1.5 |

f♯m | {6,9,1} | 3 | 2 | 1.17 | |

Augmented Triads | C♯+ | {1,5,9} | 3 | 2 | 1.17 |

Diminished Triads | f♯° | {6,9,0} | 2 | 3 | 1.5 |

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.

Diameter | 3 |
---|---|

Radius | 2 |

Self-Centered | no |

Central Vertices | C♯+, f♯m |

Peripheral Vertices | dm, D, F, f♯° |

Modes are the rotational transformation of this scale. Scale 743 can be rotated to make 6 other scales. The 1st mode is itself.

2nd mode: Scale 2419 | Raga Lalita | ||||

3rd mode: Scale 3257 | Mela Calanata | ||||

4th mode: Scale 919 | Chromatic Phrygian Inverse | ||||

5th mode: Scale 2507 | Todi That | ||||

6th mode: Scale 3301 | Chromatic Mixolydian Inverse | ||||

7th mode: Scale 1849 | Chromatic Hypodorian Inverse |

This is the prime form of this scale.

The heptatonic modal family [743, 2419, 3257, 919, 2507, 3301, 1849] (Forte: 7-20) is the complement of the pentatonic modal family [355, 395, 1585, 2225, 2245] (Forte: 5-20)

The inverse of a scale is a reflection using the root as its axis. The inverse of 743 is 3305

Scale 3305 | Chromatic Hypophrygian |

Only scales that are chiral will have an enantiomorph. Scale 743 is chiral, and its enantiomorph is scale 3305

Scale 3305 | Chromatic Hypophrygian |

T_{0} | 743 | T_{0}I | 3305 | |||||

T_{1} | 1486 | T_{1}I | 2515 | |||||

T_{2} | 2972 | T_{2}I | 935 | |||||

T_{3} | 1849 | T_{3}I | 1870 | |||||

T_{4} | 3698 | T_{4}I | 3740 | |||||

T_{5} | 3301 | T_{5}I | 3385 | |||||

T_{6} | 2507 | T_{6}I | 2675 | |||||

T_{7} | 919 | T_{7}I | 1255 | |||||

T_{8} | 1838 | T_{8}I | 2510 | |||||

T_{9} | 3676 | T_{9}I | 925 | |||||

T_{10} | 3257 | T_{10}I | 1850 | |||||

T_{11} | 2419 | T_{11}I | 3700 |

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 741 | Gathimic | |||

Scale 739 | Rorimic | |||

Scale 747 | Lynian | |||

Scale 751 | ||||

Scale 759 | Katalyllic | |||

Scale 711 | Raga Chandrajyoti | |||

Scale 727 | Phradian | |||

Scale 679 | Lanimic | |||

Scale 615 | Phrothimic | |||

Scale 871 | Locrian Double-flat 3 Double-flat 7 | |||

Scale 999 | Ionodyllic | |||

Scale 231 | ||||

Scale 487 | Dynian | |||

Scale 1255 | Chromatic Mixolydian | |||

Scale 1767 | Dyryllic | |||

Scale 2791 | Mixothyllic |

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 (http://allthescales.org) 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.