Example 24. (a) All the pitch events of mm. 1–14 (pitches from different lynes are notated on separate staves) and (b) a reduction based on pitch permeation as filtering rule. That is, it includes all and only permeating pitches (pitches connected by dotted slurs in the example above). Non-permeating pitches included in the reduction are indicated in grey noteheads.

a. computer rendition of the chordal reduction

b. Augustus Arnone performs the chordal reduction

c. Taylor & Abramovic perform the score