These pieces were all built on an ordered twelve-tone row, with the actual order often determined by chance.
This means that there are six distinct timbres reflecting the pitch structure, which divides the twelve-tone row into two symmetrical six-note cells.
In twelve-tone music, retrograde treatment of pitch is a commonplace, but rhythmic retrogrades are comparatively rare.
Order is particularly important in the theories of compositional techniques originating in the 20th century such as the twelve-tone technique and serialism.
Its components may be fixed with regard to order, in which event it may be employed, like the twelve-tone set, in its literal transformations.
A twelve-tone analysis of this piece shows some patterns of the style.
As in all twelve-tone music, there is a mathematical relationship between the prime, inverted, and retrograde series.
His interest in twelve-tone technique was joined with musical-political engagement, though this was short-lived.
