Clustered (or Melodic) Heptatonalities

Clustered or melodic Heptatonalities

Here you find what Tonalibus calls clustered heptatonalities. Their scales include five whole steps and two half steps (or semitones) in an octave, like the regular diatonic scales. However in clustered heptatonalities, alternating one or four whole steps separate the two half steps from each other. The graphs below show the recurrent progression of this pitch pattern. Only four of these scales qualified for the catalogue of harmonically anchored tonalities. Further, there are two qualified super-clustered heptatonalities with all five whole steps and also the two half steps consecutive. Tonalibus chose names for all these that reflect their correlation with diatonic heptatonalities. Among them are what is otherwise also known as melodic minor (ascending), acustic scale, melodic major scale, plus the super-clustered ones, Neapolitan major and a sort of Lydian dominant.

Fully anchored

Partially anchored

Overview visuals

Tonalibus 1e-3 tonalities - 2021-09 - 55x
Tonalibus 1e-3 tonalities - 2021-09 - 53x
Tonalibus 1e-3 tonalities - 2021-08 - 54y
Tonalibus 1e-3 tonalities - 2021-11 - 49
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Tonalibus 1e-3 tonalities - 2021-09 - 55x
Tonalibus 1e-3 tonalities - 2021-09 - 53x
Tonalibus 1e-3 tonalities - 2021-08 - 54y
Tonalibus 1e-3 tonalities - 2021-11 - 49
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On the page Tonalities, you find a list of all anchored tonalities included in the catalogue, along with a side-by-side juxtaposition of their scale patterns, as well as a general overview of fundamental pitch distribution patterns.

Common characteristics of clustered heptatonalities

Clustered or melodic tonality matrix: The octave includes five whole steps and two half steps (or semitones). Either one single or a group of four consecutive whole steps, one and four alternating, separate the two half steps from each other. In super-clustered tonalities all five whole steps and also the two half steps are consecutive.