Harris Johns is the Berlin-bred producer/engineer who's been putting steel-toed boots on tape since 1978. I first clock him in the late 70s punk grind, then the early 80s when his Music Lab rooms started spitting out Slime (1983) and Daily Terror (1984). Mid-80s through the early 90s he helped define Teutonic thrash for the Noise Records crowd: Grave Digger and Helloween (1984-85), then Sodom, Kreator, Tankard, Voivod and Exumer (1986-88). He kept the soldering iron hot into the 90s-2000s (Sodom again, 1997-2001), later taking on international metal like Enthroned (2004-07). After a decade at his countryside "Spiderhouse," he reopened Music Lab Berlin in 2007 and ran it until 2016 - still producing and teaching the craft.