Brass make brass was not recognised as a metal. The King James Bible makes many references to "brass". The Shakespearean English form of the word 'brass' can mean any bronze alloy, or copper, rather than the strict modern definition of brass. The earliest brasses may have been natural alloys made by smelting zinc-rich copper ores. By the Roman period brass was being deliberately produced from metallic copper and zinc minerals using the cementation process, and variations on this method continued until the mid-19th century. It was eventually replaced by speltering, the direct alloying of copper and zinc metal which was introduced
Industrial metal collaborations with and remixes from industrial metal musicians. When industrial metal climbed the charts of the late 1990s, its sudden popularity was met with negative reactions from the early innovators of industrial music. Peter Christopherson told "The Wire" that he no longer felt any kinship with the industrial scene: "this is not me, this is not what I'm about". Lustmord, a prominent early industrial musician, declared that "Ministry just doesn't interest [him]" and "[he has] no time for all this rock and roll shit they're doing now." Skinny Puppy frontman Nivek Ogre dismissed Nine Inch Nails as "cock rock" but