Twelvetone Triads and Hexachords: Part 3 Modal Triad Polychords

We may create twelvetone triad sets from combinations of modal triads, including the major, minor, diminished, sus2, sus4, Lydian and Phrygian trichord. This video presents 4 modal triad sets, with an analysis in terms of the equivalent hexachord Pitch-Class Set, and dissonance classification into a Hindemith Chord Group. Polychord voicings and Ulehla tension level are demonstrated. Chord progressions are created with various approaches, such as juxtaposition of hexachord combinations, polychord permutations, transpositions with pivot chords and overlap, variable density and strata harmony, and mixing different harmony systems. Instrumental Form design yields composition examples in various styles. This episode completes the series on Twelvetone Triads.

Contents:
00:00 What this video is about
00:24 Section 1. Introduction
00:50 Section 2. Fundamentals of twelvetone trichord sets
02:12 Section 2.1. Hexachord combinations and polychord properties
02:40 Section 2.2. Chord tension level classification
03:13 Section 3. Twelvetone sets with regular triads and modal trichords
03:36 Section 3.1. Modal triad set 1, with SM, S4, S2 and Slydian
06:33 Instrumental form and example 1, chamber music phrase for trumpet and piano
08:39 Section 3.2. Modal triad set 2, with SM, So, S4 and Slydian
10:58 Instrumental form and application example 2, orchestral suspense
12:31 Section 3.3. Modal triad set 3, with Sm, S4, S2 and Sphrygian
14:12 Instrumental form and example 3, synthesizer and orchestral texture in 3 layers
15:39 Section 3.4. Modal triad set 4, with Sm, So, S2 and Sphrygian
17:31 Instrumental form and example 4, a 6/8 meter shuffle rock
18:40 Section 4. Example composition, ambient suspense texture for synths, brass and strings
22:06 Summary and conclusion

Find the interactive Pitch-Class Set Analysis tool at
https://www.fransabsil.nl/htm/toneset...

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