Louis Andriessen

• A short documentary about (and with) Andriessen.
• De Staat and De Snelheid. 
• Music for Peter Greenway's film M is for Man, Music, Mozart.
• A paper discussing his composition  De Tijd.

A recording of part 4 of De Materie (the full piece is available through naxos-music-library

Phasing

Reich's Clapping Music is one of the most famous pieces using phasing as a musical device. An animated illustrating of the process. His Music for Pieces of Wood shares similar approach but achieves in in a slightly different way:

 Piano phase, as the name indicates, applies phasing techniques but with pitched material. The first part of Tehilim (psalms) uses phasing to generate rich evolving textures. And discussion of the composition process: