 He was a sound engineer at legendary club First Avenue, where he became the Replacements' preferred sound mixer for their shows.With Mould and the other members of Hüsker Dü, Katzman co-founded Reflex Records, which released Hüsker Dü's early single "Statues" and first studio album "Everything Falls Apart".Under Katzman's guidance, the label would also release several compilations of regional underground and alternative bands, as well as albums by local post-punk bands Rifle Sport, Man Sized Action, Otto's Chemical Lounge, and Articles of Faith, as well as the Minutemen's 1985 EP "Tour-Spiel".