Oval: Dowhile
(1995)by Sebastian Oschatz is the 24-minute opener of 94 Diskont by the electronic music group Oval from Germany, arguably one of the most radical electronic albums of the 1990s.
Oval equally drew praise and controversy for their assault on techno's restrictions by literally deconstructing music and digital audio by using X-acto knives, paint, and tape to damage the surfaces of CDs, only to stitch it back together in loops of melody punctuated by the CD's physical skips. The group – then composed of conceptual mastermind Markus Popp and comrades Sebastian Oschatz and Frank Metzger – were one of the earliest proponents of the now-quaint subgenre glitch.
Source: Stylus