I'm referring to the music at 1:20 of Ryoji Ikeda's superposition.
Are there any modernist composers (preferably acknowledged by musicologists) who have composed this type of music?
The use of "tone clusters" and the related concept of "sound mass" can lead to results that are somewhat similar; e.g. some parts of Kraanerg by Xenakis. See these Wikipedia pages for more info and a list of composers and compositions: en.wikipedia.org/wiki/Tone_cluster en.wikipedia.org/wiki/Sound_mass