Physically treating CDs with scissors and knives generates controlled digital errors as composition

Markus Popp of Oval (founded 1991) pioneered treating CDs physically with scissors and knives to induce predictable classes of digital error — skipping, random looping, stuttering. The article likens this to John Cage’s prepared piano: a systematic intervention on a standard playback medium to expand its sonic vocabulary. Unlike purely random damage, the treatment can be directed toward particular outcomes (long droning loops vs rapid glitches), establishing a key principle — constraint-based error generation as composition. The technique influenced later laptop glitch work where software artifacts replaced physical CD damage.

Examples

Oval’s ‘AllesInGedanken’ (from Wohnton, 1994) is described as a ‘prototype for the genre’ — traditional songwriting fused with CD-induced digital errors as structural, not incidental, material.

Assessment

Compare CD-scratching as a generative technique with algorithmic error injection in a DAW: what does each control, what does each leave to chance, and how does each align with the clicks-and-cuts aesthetic of hacking digital technology?