In addition to his solo career, he has recorded under the monikers Auch, Betrieb and Ferdinand Fehlers and as a member of the duo Autopoesies and his band März.
Autopoieses was in part about the recontextualization of samples, and the duo released their well-received debut record exploring these ideas in 1999 on Mille Plateaux.
Constructed primarily of manipulated samples of Arnold Schoenberg and Charles Ives, Betrieb is steeped in theory, as evidenced by the Ehlers-penned liner notes.
He remixed the Red Hot Chili Peppers' single "Californication" and collaborated with the band on a couple of their live sets.
The remixed Californication and the 14 minute improvisation jam Tuesday Night in Berlin can be found on the second version of the Red Hot Chili Peppers' Fortune Faded single.