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- dbr:File:Hauer_trope.png
- dbr:File:Hauer_-_Nomos_Op._19,_beginning.png
- The "first 12-note work"center|400px (en)
- Sample of "Sehr langsam" from String Trio Op. 20 by Anton Webern, an example of the twelve-tone technique, a type of serialism (en)
- The principal forms, P1 and I6, of Schoenberg's Piano Piece, Op. 33a, tone row feature hexachordal combinatoriality and contains three perfect fifths each, which is the relation between P1 and I6 and a source of contrast between, "accumulations of 5ths", and, "generally more complex simultaneity". For example, group A consists of B–C–F–B while the, "more blended", group B consists of A–C–D–F.center|400px (en)
- center|350pxHexachord invariance. The last hexachord of P0 contains the same pitches as the first hexachord of I5 . (en)
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