Real name: Matthew Waldron

Effective period / Period of releases: 1997 - 2021

irr. app. (ext.) is Matthew Waldron, a Californian artist and musician, based in Oregon. With a number of homemade CDRs long being available, including "Foreign Matter, Nor Frequency Carrier" (1998), and "Radiant Black Future" (2001), irr. app. (ext.) CDs are finally being given official label support both in Europe and in America. As well has his own records being made available, he also collaborated with Nurse With Wound on the 3CD set "Angry Eelectric Finger" (2004), in which irr. app. (ext.), Cyclobe, and Jim O' Rourke each contributed a CD of reworked material provided by Steven Stapleton.