* Covenant’s Blade Runner reference here is nothing new; the first song they ever released was 1992’s “Replicant,” with its chorus “‘Cause I am the replicant. To hell with the gods. The rain, always the rain.”

* Instead of using Covenant’s VI–VII–i, Apoptygma Berzerk uses VI–v⁷–i, which is the same upper-voice harmony but substitutes the dominant in the bass on the second chord.

* A remarkable number of industrial musicians have been teachers, professors, and academics, including members of Attrition, Controlled Bleeding, Stromkern, Clock DVA, Front 242, Sea-bound, the Cassandra Complex, Revolting Cocks, Razed in Black, and Cabaret Voltaire.