Twelvetone Triads and Hexachords: Part 1 Polychord Structures and Properties

This video tutorial is the first in a series about 12-tone triads, that is, sets of four triads that together cover all chromatic pitch-classes. This episode discusses the pairwise combination of triads in thirds into hexachords. These receive a corresponding Pitch-Class Set prime form label and Hindemith Chord Group classification. Triad pairs are stacked as polychords with a Ulehla Chord Tension Level indication, depending on the distribution of dissonant intervals over the chord structure. The video contains polychord voicing, chord progression and two composition examples.

Contents:
00:00 What this video is about
00:28 Section 1. Introduction
01:03 Section 2. Fundamentals
01:19 Section 2.1. Twelve-tone triads
03:09 Section 2.2. Hexachord combinations
05:04 Section 2.3. Chord tension level classification
07:17 Section 2.4. Polychord voicing
14:00 Section 3.1. Chord progression and composition example 1, 4/4, guitar etude
18:05 Section 3.2. Chord progression and composition example 2, 3/4, orchestral suspense cue
21:55 Summary and conclusion

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

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